And I hate it with a passion. Publishers have no problem taking money from Linux users, only to ignore Linux-related bug reports and tell people “it’s not supported.”

I really hope Steam will use its position soon to either let users get refunds when devs break their games or force the gaming industry to support the Linux users they’re making money from.

That's really what the (Deck/Machine/SteamOS) Verified program is for. Valve tests games out on those platforms and reports results back for everyone on the store page. Publishers have the control to explicitly mark it as unsupported too.

...I mean, you're buying a windows version, then complaining that it's not running well on an unsupported operating system?