Appreciate the clarification - and it’s good to know that it’s likely a collective action, rather than individual.

But there’s a fundamental difference - two really - between the example you give, and my post. In your case, it was behaviour (channel flooding) that was the problem; in my case, it was the content of a post that the admins objected to, even though it didn’t violate any rules on the originating instance and community, nor on this instance - nor did it run afoul of the intent of the rules, as far as I can see.

It was strictly a case of the admins deciding “we don’t like that post” and removing it. They became content gatekeepers - honestly, de facto moderators on their own instance.

If the admins don’t like a community from an instance, they should be free to block the community or defederate with the instance entirely; but filtering content based on their view of what they think should be allowed in the community is…

Yeah, it’s just not right. It’s harmful to the community as a whole, and disproportionately harmful to communities on other instances.