But to be fair, that's kinda hard for those old games and it still runs with wine.

That being said, valve is an ally of the Linux community. There are almost no companies that can be trusted, but valve is one of them.

And that's why Steam gets my money instead of GOG.

That said, apparently Heroic has some kind of agreement with GOG where they get paid for sales, so maybe by buying games on Linux through Heroic you'll get GOG interested in Linux support.