This behavior is - in part - why I decided to shut down my Mastodon instance, once the home of ~40k users. "ordnung" is the team behind chaos.social, a fairly large instance. Instance based censorship, in this case even proactively, is the #1 problem on Mastodon and it has sadly become a disease. They should leave these decisions up to their users. Instead, they assume the role of some super powerful governing board, hurting the fediverse in the long run.