Some anticheat systems require a backdoor. If those are games you want to play, you have to submit to it. Personally I see it as a reason to avoid those games, but if you really want to play them, you may not have a choice. Apart from pressuring the publisher to support saner anticheat and Linux.

I don't and it sounds like I might not have to soon. Mslop had us by the balls for long enough.