Every Anti-Cheat that works on Linux (the big one for example EAC and Battleye) only has surface level access and can't scan your whole PC or act like a rootkit like on shitty Windows. Anything that goes deeper isn't possible without root permissions and that doesn't happen on its own with a normal Linux installation.
This FaceIT "Anti-Cheat" has other problems why it should be avoided.
At least they removed the SMS function.