i have such conflicted and strong feelings about this. as a mod of several furry telegram chats i have had to experience this "anti" affinity with some very outspoken members and, recently, some younger members who are just over the +18 line.
safe spaces and protecting minors are obviously paramount. on the other side, where adults only congregate, i think people need to understand that every group chat, every discord server, every lemmy instance, etc. is going to be a shared space. this shared space has admins or the original group who set the expectations and what's okay. these may be people who have different ideals, values, and moral points of view from you. if you're outnumbered in your opinion, you can't just create some power to change everyone's opinion on something. that's no different than real life where you can't kick someone out of their own house because you don't agree with them. imo, this is related back to the core of the article: entitled visitors and onlookers really ruin otherwise safe spaces because they feel entitled to shout their dissenting opinion in an otherwise mellow and agreeable space. and that is really awful sometimes.
edit: i felt like i should add that i am very supportive of civil, respectful disagreement and discourse. my examples were more towards a situation where, for instance, a subject otherwise agreed upon by the group would cause one member to cry out that they should all be banned or removed from the space. this extremism really hurts productive conversations. it's not impossible for a group of people to be completely wrong and out of touch on a subject, but malicious and hateful dissention doesn't solve anything. it only makes abraisions in an otherwise, usually, calm space