The very generic message makes me inclined to think so too

Let’s be honest here, they only care because when someone inevitably fucks up, people will think the fault is with windows.

It’s true that a big slice of gamers play games with anti-cheat solutions that don’t work on linux. That said most of those aren’t even on steam, which is the biggest pc game marketplace, so I’m not sure it’s that big of a dealbreaker for that many people.

If Twitter is any indication, Discord would have to fuck up big, and for a long time for people to switch.