Maybe playing with the anticheat enabled makes you immune to being reported for cheating (because they can verify down to the kernel level that you aren't), but you can still play without it (but without the immunity from being reported).
Obviously they wouldn't do this in today's market because there's no incentive to do so, but if a significant portion of gamers moved to Linux, offering a Linux solution might become a reasonable choice for game studios.
I can imagine a whole scene popping up where everyone cheats to the max, creating whole new game modes.
That would be very interesting. I also bet that people would start developing bots that play the game better than a human could and eventually it would essentially turn into digital BattleBots.
And anyway I (and many other people!) have valid keys for basically all widevine streams extracted from supposedly secure android devices. That DRM approach ended up failing miserably and torrent sites are full of WEB-DLs.
Also some services will just downgrade you to a lower quality stream if your device doesn’t have the appropriate keys.
