Comment by Jnr

It doesn't have to be bypassed. Those same anti-cheats used by many unsupported titles are enabled for some games and work fine on Linux. So you just have to give the developers some incentive to enable it for their titles. It is a choice made by game developers. Currently they don't see a market on Linux/Steam OS but if Steam Machines become popular, potentially they would be missing a market and decide to join in.