I made the switch to Manjaro in January, haven't needed Windows once for gaming.
Most difficulty I've had was with Cyberpunk 2077, but that's because GOG broke some shit on their end that requires a workaround hack to stub some phone-home code that checks what DLC you have or whatever.
For the most part, shit just works now.
They'll be moved by force if it gets large enough. Homeless people reaching critical mass is something cities actively "tackle" by loading them onto buses and sending them elsewhere.