That doesn’t make a lot of sense. Generally the only way a game could have a chance to brick a computer would be if it either had access to delete critical system files or if it ran something at the kernel level (like some anti-cheats).

If it’s the latter, it might corrupt a Windows install or maybe even damage the hardware though that’s less likely.

Either way it shouldn’t brick a Deck since the anti-cheat will run in Proton, entirely in user space.