I agree. But at least they out themselves by including their pronouns in their username, so I can easily just skip over their posts. Pronouns should never be necessary on the Internet, especially on an "anonymous" platform like lemmy. Just use they/them or structure your comment in a gender neutral way and you're golden.

So I don't think so need to defederate, we can just ignore them as is. If they cause actual problems, sure, defederate.