The closest might be those chess AI which learns by playing chess with itself.

He won’t be able to access external if he uses flatpak if I am not mistaken.

Probably those email power users. Still surprising to see Arch so popular. Is it pure arch or does it includes the various flavour of arch. Tbf I also used arch as my daily driver.

So just AMD and Intel?

Also steam deck being a thing now

Sometimes it’s a nice perk if you want to play modded coop with your friends ie those from mods.

I believe actual cheating requires there to be harm done to another player be it due to unfair advantages, theft of time or other malicious activity.