You really think Apple's business model is to have SSD failures after a couple of years so people need to buy new laptops? That's their revenue maximizing strategy? Destroy their brand and get a reputation for cheap crappy laptops. I seriously doubt it.There are lots of videos showing how light of a workload already results in using the SSD storage for memory.
The SSDs are non-replaceable and their failure means a logic board failure (has to be replaced entirely). SSDs have a limited lifespan of write cycles.
None of this is even contestable. The only question is whether or not it causes a device failure ahead of the end of its useful life. 8GB non-upgradeable RAM starving the device at new in 2024, maybe the whole device will be simply too slow before the SSD fails. Could only take a couple of years anyways. How else is Apple going to convince people to hand over another $2K three years from now? They love nothing more than people who don't have a clue what's going on.
I suspect only Apple has the data on why logic boards fail, if anyone. When the board on my 2020 5k iMac 8GB failed, Apple didn't say why, they just replaced the whole thing. I since tossed in 32 GB for $75 so hopefully it'll be fine for the rest of the decade that it will be good for.
My family and I have purchased numerous base configuration MBA with 4-8GB of memory over the years. Most of these are college computers that get used plenty. Never ever had an SSD failure or logic board failure. All lasted 5-7 years and worked perfectly when traded in for something newer. BTW- these computers cost $999 not $2K.
The idea that there is significant risk of SSD failures due to insufficient RAM after a couple of years of everyday use sounds like an exaggeration to me. It certainly is not my experience.