I didn't read the majority of that minutia, and I have no idea why you're so personally invested in arguing this.
I argue this, as I argue for so many things in Apple's favour here at Macrumours, for one simple reason. I firmly believe that an argument should not only be correct, but it should also be correct for the right reasons. And I believe that all the muss and fuss here is because an incredibly small but vocal group of users here simply want more ram (whether they actually need it or not remains to be seen, right now it feels purely ideological) and for some reason, are just too stingy for pay the extra US $200 for it.
My stance is, and always has been that Apple makes 8gb ram the default for their entry-level Macs because they have the user data on how customers use their products and are confident that the baseline spec (M1 chip, 8gb ram, 256gb storage) suffices for the majority (ie: at least 90% of users). These are the people who typically use their computers for web browsing and office work. I won't complain if Apple does increase the starting ram to 16gb one day, but I won't lose sleep when it doesn't happen because truth is - it's more than good enough for them.
This idea that the needs of users can be based on how pro their workload is isn't accurate.
Let me then throw the question back to you - for the vast majority of users whom 8gb suffices for, what exactly do you foresee happening in the near future that would suddenly make their Macs incapable of handling overnight?
I disagree with the notion that a laptop ought to come with more ram and storage (for free) in order to prepare for a rainy day that may never come. The users who require more ram for Resolve or FCP or Photoshop know who they are (and they are likely working with these apps in a professional capacity). If they stubbornly insist on getting a base spec Mac knowing fully well those apps won't run well, that says more about their inability to plan more than it does about Apple's supposed penny-pinching ways.
You can usually still run unsupported operating systems in most cases, or there are tricks to get unsupported computers to install/run the OS, but the hardware will choke, and slowly make you miserable. Beach balls, the curser freezing or hanging on a character or two at a crawl while you're typing normal.... basically behavior some people are already complaining about with 8gb M line computers but nonstop ... and it is a matter of storage and RAM in that case, and Apple has crippled both.....and longtime customers have experienced Apple ending life of technology they sold only a week prior.
Again, how many people are going to be trying to run an unsupported version of macOS on their Mac, and why do they feel like Apple is expected to accommodate them on this? These scenarios you have cited are all edge cases, which again can (and should) be remedied by said users simply opting to purchase additional ram or a more powerful device upfront.
Apple designs their devices with a fixed number of years of support in mind (in a sense, we have paid for it upfront). You are arguing for Macs to come with more ram in order to support this small number of users who want to continue using their Macs long after it no longer qualifies for OS updates, but evidently feel like their devices should be able to support them nonetheless.
If this incredibly niche group of users feel this way, why not simply pay more upfront for additional ram, instead of Apple providing for free just to address this incredibly small demographic?
That would be a lie. It doubled in 2014, when I bought my stock base model.....it hasn't changed since then.
To me, how much ram a laptop came with 5 or 10 or even 20 years ago is a red herring. As is trying to argue that today's computers should come with more ram and / or storage simple because there is a computer with the same specs many years back.
If you want to use salary as an analogy, I can also argue - you get pay rises to help cover the cost of inflation (ie: you earn more today because things also cost more). In the same vein, the cars on the road today still largely have the same maximum speed as a car from decades ago because speed limits haven't changed, and in general, people are still driving at the same speed, so it makes no difference whether your car can hit 200 or 300 km/h if your expressway lists a max of 90.
The question ought to be - what exactly do you need the extra ram for, and what is it that you are doing on your laptop today that requires the extra spec over an equivalently-specced PC from back then? So far, the reasons I have seen all feel rather specious to me, and can be summarised as such.
1) I don't want to pay for more ram, so Apple should just give it to me for free.
2) I expect to use my Mac for an additional 10 years after it no longer receives software updates. I expect Apple to give to me for free not only the specs needed to support the 7 years of macOS updates it will likely receive, but the 10+ years of unsupported macOS updates I intend to force upon it. Anything less is considered forced obsolescence in my book.
3) I intend to use professional-level software on my Mac, which I know will require a fair amount of resources, but instead of getting the appropriately-specced MBP with the Pro or Max-level chip, I will instead opt for the cheapest Mac that Apple sells, knowing fully well that it cannot support the software I use, then proceed to raise a stink about it online about how Apple is being a cheapskate.
4) I expect the amount of Ram in a computer to double every pre-determined number of years, regardless of whether there legitimately is a need to or not. No reason justifying why.
5) Mac sales are simultaneously down because they have too little ram and storage for the price (the implication is few people are buying them because they provide little value for consumers), while also fostering forced obsolescence because the soldered ram means people have to upgrade years later (the implication is that a lot of people are buying them). So which is which now? Because you can't have both.
So yeah, if you wonder I seem so invested in this, it's because the arguments you have put forth thus far are to me, poppycock, and it's a hill I am prepared to die on.