Yeah, I thought about that. But tags are different from each other. Let's take, for example, "ai-cg". I know that these games, as it looks like, have their own part of forum, but in "Latest Updates" all games are kinda in one bunch. I can filter them via render or tag exclusion, but that's just an example. There are tags for certain content and more like "core tags" (e.g. protagonist gender) or unavoidable versions (I'm not sure about your example because, I think, I can't find it yet. But I see avoidable versions for some content tags. Your description fits a bit to avoidable version. Though these tags numbers are a bit low - is it not really popular to use these tags or that's just how things are in games?).