I mean even as a trans person, I don't feel like it's particularly important to do a blanket ban on an entire, heterogenous organization just because one arm does a transphobia. I've been kinda bristling lately about how reactive the fediverse is sometimes, to the point of harassing others (I'm sure defederation isn't the only thing the #BBC will experience today).
At the same time: it's important, as part of the fediverse experiment, to detach ourselves from wanting to make that line go "up and to the right".
I feel like the fediverse has the ability to allow for both "let's grow a lot!" people, as well as people who prefer more limited, cozy, proactively safe communities.
I think talking about it in terms of what "the fediverse" should do is the wrong way to go about it: I think we need tools/instances/software to enable both. I think this is possible, but our tooling just plain ain't there yet.