Comment by embedding-shape

> I do not mean separate as in separate matchmaking [...] for the weaker Linux anticheat that runs through Proton

This is exactly the problem. Users connecting via Linux are more likely to be cheaters, since the anti-cheat is weaker on Linux, so in order to protect the user-base at large (Windows users), they don't allow Linux clients at all. Allow the less protected Linux clients to connect goes against the very change they did.