I agree that people are allowed to post things here that shouldn't be allowed. That is a matter of administration and moderation policy though. That's another subject. The terms of service, if you can find them, have changed and things are allowed now that previously were not. Years ago a user was banned or given a time out for posting a "baby Hitler" meme that was popular at the time. Now it's okay to actually stand up for the policies of Hitler and say that he was trying to clean up Germany from the decadent Jewish people and their pornography. That was actually posted with no repercussion.
But no matter what someone posts, you can either complain or argue but I don't think you can stay within the guidelines, vague as they are, and target someone.
When you say "push back" I don't know what that means.
You do deny he's being stalked but the definition of stalked might need to be nailed down.
As far as the ignore user feature, good point but it's a feature available to everyone. If you're posting on a website with the type of people that you feel should not be allowed to be there I don't think you can reasonably expect to post about them and ask them to ignore it.
Honestly, maybe FHIGMN has posted personal info here but I've never seen that. Any biographical info I have read on him has come from your posts. A first name, comments about his appearance and his career goals, and his activities elsewhere as a writer which he confirmed have all appeared here. I could be wrong. I do not read every post he makes and often don't read this thread at all. He might have posted all of that himself. I saw it in your posts.
A few days ago you asked for information about a previous username
@Born to Harangue may have used and I said I don't know and asked why you wanted that info. I offered the opinion that he might have a good reason not to want that information posted.
It seems relevant to ask again why you wanted that info and what use you had in mind for it. You didn't answer at the time.
The ironic thing is that I've told BtH that he sometimes becomes overly interested in certain other users here, too, and I think I should say that. I'm sure no one but me cares what I think or whether I'm being fair or not but I really only want to know what's true and not try to join some gang opposing some other gang.