Comment by immibis

Anticheat blocks Linux deliberately. Its whole point is to check if you're running an unmodified copy of Microsoft Windows. Linux is not one, so unless it gets really really good at deception, it won't pass those checks.

It doesn't just check if a cheat process is running, because obviously cheats know not to let themselves be discoverable that way. Heck, there are hardware cheats now that simulate various PCIe devices but with extra sneaky DMA operations. (I bought one because it's a cheap way to have an FPGA in my computer)

It's a political problem, though. They don't pass Linux because few people don't buy their games just because they refuse to run on Linux. If people did do that, they'd have to change the anticheat, no matter the consequences. Probably higher cheating, since there is no true official blessed unmodified Linux system to compare against.