I'm not quite following you. Do you mean that if I use a tag that a community uses among the ten tags I'm allowed to use for each article, it will automatically tag me into that community despite that I never officially joined them? The link to the article of mine that this NSFW nonsense is happening with is @epicenterdefacto/a-sexual-taboo-involving-teenagers-can-still-be-clinically-diagnosed-as-normative