It doesn't matter whose fault it is, I go where the games actually work and are playable, which is still Windows today for many games.
They quote "If a game has an aggressive anticheat" and then state "The determination of the average Linux user to ignore the faults of Linux", which is accusing Linux of being at fault for the aggressive anticheat not working.
FWIW, I am not alone in that interpretation since this commenter reached the same conclusion: https://news.ycombinator.com/item?id=47718389
But I don't think we can conclusively say either one of our interpretations is correct.