Let's hope his friends don't try to drag him into any competitive mainstream games. Valorant, Call of Duty, Battlefield, EA Sports FC, … Kernel-level anti-cheat usually doesn't work on Linux.

Let's hope Valorant, Call of Duty, Battlefield, EA Sports FC and others who explicitly deny their anti cheat from working on Linux react to the increasing demand for gaming on Linux, and begin supporting anti cheat on Linux.

Also, if his friends play Halo, CS2, Ark, War Thunder, Arma, Hell let Loose, Splitgate, TF2, DOTA, Overwatch, or The Finals, he'll be fine.