It's very fortunate that Linux devs do not tolerate this DRM crap. What you are asking for is to turn Linux into another Windows, at which point there is not point.
If you're not willing to stop using harmful software that's your problem.
And let's not forget that cheating in online games is only an issue because companies have co-opted what was a social activity between people you know (or at least can get to know) into a more profitable asocial e-peen measuring contest between randoms.
Online cheating as existed for as long as online games have existed. Long before companies cared about online gaming as a serious generator of revenue. There is a certain percentage of the population which enjoys hurting others and making them have a bad time. The anonymity of online games allows them to be antisocial with very few social repercussions.
I think equating having the option of KLAC with Windows is totally disingenuous. There are countless other differentiators. You would be free to just not use KLAC if you so desired.