There is no “they”. Every server has the ability to tailor its own federation list, fediseer simply spreads out the labor of actually poring through hundreds of different websites by providing a centralized repository of information. We can take that information and use it however we want.

I’m sure we at least agree that CSAM is completely unacceptable, right? So there are some servers that need to be defederated and censured. The only question is how many, and what other problematic behaviors also qualify, and the answer will be slightly different for each server.

Does that alleviate your concerns?