I'm on garuda so i guess at the start on that. Already been through the valley of despair though, went back to windows and it sucked so i went right back on garuda, which has been working since.
They do and it auto activates when you add a Microsoft account. It cannot be turned off on the home edition as it doesn't have the full bitlocker settings. Came across this one on some machine i was working on a while ago and i ended up having to pull the SSD from the customers machine and plug it into something with pro to actually disable bitlocker.
Logitech, razer and corsair has all worked for me. Of those the razer trinity was probably the best and the logitech g600 i use now is good as well. Input-remapper can remap them no problem. The G600 has a weird issue with piper DPI settings being a bit weird at random on reboot in that the vertical dpi tends to get set way higher than the horizontal and you have to reload the settings in piper for it to work properly. When it comes to the software the corsair one i had was the best as ckb-next could handle everything including the keybinds. The hardware on that mouse was crap though and the scroll wheel died after like 5 months.
Myself i run "Firedragon" which is a fork of floorp. As for why its mostly because it came with the distro i run (garuda linux) and it works nicely so i didnt really feel i had to swap it.
Hey, at least it told you. When i was fiddling to get disney plus working on my own setup it just refused to play until i changed the reported OS to windows. Nothing else was changed. I really have no idea why they would go out of their way to block specific operating systems.
I'm on garuda so i guess at the start on that. Already been through the valley of despair though, went back to windows and it sucked so i went right back on garuda, which has been working since.