If it were my forum, I would just strip out any links to the honeypot URL. I have full control over who can post links to what URL, after all. You could use a

If it were my forum, I would just strip out any links to the honeypot URL. I have full control over who can post links to what URL, after all. You could use a URL shortener to bypass the ban, but then you'll be caught by the cross-origin referrer check.