leman, bold claims. Only minority? Checkout mac market share with current apple policy. But i also don't want to say who is minority here, since i don't have any stats. Maybe you have?
Modular components e-waste is worse than full motherboard / laptop in trash? I don't think so. Yes, there is additional cost in ~0.50 cents for M2 slot, good thing to pay for me, if it saves world from another laptop in dump.
You missed point about privacy. What does soldered ssd solve here, if there is data encryption? There is can be other pros in soldered ssd, like speed or consumption, but this need to be proved with other laptop comparisons, if you want to show facts.
Apple extended warranty does not cover all things, are you living in parallel universe, or work on Apple support? Maybe you want to check this thread then, as tiny example
https://discussions.apple.com/thread/252794122
And i'm also don't know, how realistic is component-level repair today. How much effort it needs instead of swapping ssd in slot, how much it cost, how many things will be moved to trash after such repair, and then be fired or dumped anyway. Apple does not repair motherboards and recycle it instead. Maybe we already living in magical world, where motherboard recycling is easier and cheaper than ssd replace with component recycling. Without context, this sound more like a dream, while other people can save money and worked devices with tiny slot already.
Btw, Apple recently moved ports from being soldered to motherboard. Now you guys are unsecure to ports hijacking, be aware! =)