Steam basically went from not accepting any NSFW content to allowing all NSFW content, to allowing NSFW content but imposing a couple of very strict guidelines. That's why Evenicle got accepted back in the day, but Evenicle 2 wasn't now.
yeah fuck steam i have seen them banned people for a lot less is ridiculous this is why i hate steam and patreon for nfsw, any company that have so many ridiculous rules for porn should just banned porn don't give creators false hopes and let creators establish themselves in platform that are better for them. like itchio and subcribestar