Citing Jim's opinion as conclusive is a logical fallacy: Name dropping and Appeal to inappropriate authority.
Jim is entitled to his opinion, just like you and I, and the poster you are replying to. But, it's not an appropriate argument to make your case.
I've seen long term posters get the zot over this issue.
Threatening someone with a ban is DEFINITELY not an argument to make your case. It's bullying.
Jim's opinion matters to the extent he controls who has access to his forum.
If you don't like it, take it up with him.
/johnny