I have 1 reason. ConPTY - it simply works better on Windows 11. VSCode actually respects mouse support under 11 w/ POSIX compliant terminals - but not under 10. That is it, and for RDP but 10 did equally well with RDP, except for the ConPTY support being broken.
So all in all the main reason I use 11 is for better mouse support in terminals that finally puts Windows on the same playing level as macOS or Linux for me. I still hate the OS, but at least it is usable after countless hours of doing other fixes.