I know there are workarounds, but this is true. There are very little games I buy (at least directly) through steam nowadays, because I didn’t like what it became after the Greenlight/Direct debacle and I didn’t want my library to be that dependent of them anymore.
I have playnite as a unified game library launcher (with GoG, itch.io, humble, Ubi, EA, even Amazon Prime and freaking EGS just for the free games), so where I get my games from doesn’t matter much for me now.
But workshop integration is basically the only thing that makes me want a Steam copy for a game.
Though among the games in that case, there were Rimworld and Dwarf Fortress, and for both if you get a copy directly from the developers, you get DRM-free and a Steam key. So, that’s what I did.