Yes, it’s invasive kernel-level anti-cheat common in competitive multiplayer games now, because cheaters will mod their system that much for the sake of getting around the anti-cheat. Annoying from all sides.
That, and despite many devs being Linux fans, there does seem to be a (false) perception that Linux is the OS of choice for cheaters.
EDIT: Just remember, can’t play a game on Linux? It’s ALWAYS either the DRM or anti-cheat. Either way, corporate BS that hinders honest paying customers more than the people it’s trying to stop.