Well, civil rights lawyers have been pretty busy lately trying to stop the slide into facism, so they haven’t gotten around to making our choice of OS a protected class.
Seriously though, why would it be illegal? It’s their game, so they get to be assholes and decide who gets to play it with them. I don’t think that’s ever going to change, and I’m not sure it should. We do the same thing in the Fediverse, deciding who gets to use the instances we control.
I would say claiming that a game supports a certain operating system and then banning players for playing it on the system is false advertising, especially if the game is paid.
The game is listed as not supporting SteamOS (Arguably the most popular linux distro for gaming right now) and incorporating drm that does not work on Linux, this is far from false advertising as I can see it. https://store.steampowered.com/app/2073850/THE_FINALS/
