That's the one that really shocked me, and I haven't even experienced it for myself. I'm not normally that prone to excessive hyperbole, but that's about the most terrible thing I could ever conceive of an OS doing. All of the other stuff is a little annoying, but I could deal. But how in the hell could it ever be considered acceptable by anyone for your own OS to delete your files and move them to OneDrive or any other cloud service automatically? It's almost like ransomware, but the ransomware people will at least give you your files back for one flat payment. And the ransomware people at least know they're doing something nasty, and didn't try to integrate it as a default operating system feature. I guess they have better ethics than Microsoft!
It's just so obviously wrong, it's hard to even believe that it's a real thing. I don't think I could ever install an OS that even had a feature to do that at all, even if I could maybe temporarily turn it off with some scripts downloaded off the internet.
Obviously, Microsoft can't give people back their deleted Onedrive files, but they can make good on a promise that it will never happen again (given that their efforts are founded in reality and not marketing speak), and hide behind a shield of 'that wasn't our intention'. Same goes with most other things you could complain about Windows.
If you have no reason to believe that Windows will screw you over, since MS has course-corrected on all major points of contention, then why not stick around? (The answer is that MS may change course again, but for those who haven't jumped ship, I'm sure this will provide good enough reason to stick around. It's not like the ship isn't providing them any utility. They've stuck around this long for a reason.)