All games on Steam have a 2-week after buying or 2 hours after playing refund period, so it's easy to try to see if the game works on Linux or not.
EDIT: never mind! I forgot to check the "force the use of a specific Steam Play compatibility tool" in Settings -> Compatibility. With that checked (Proton 8.0.2) it installed and launched just fine (after launching the "repair easy anti-cheat" once)!