The real problem is not instantly banning spammers like yourself. It doesn't matter if it takes a few days, as long as the punishment is severe enough.
I don't see you very thick skinned with this topic.
The forum could use AI to fight against AI, Scams and Spam.
I imagine it's like the anti-plagiarism tools you are proposing. Internet made plagiarism easier and at the same time plagiarism detectors emerged.
And my question for the community is: Is it really worth trying to automate a process like this, or are we fine with the current situation?
I think you will be more successful if you present something that works and make it available to the community. After you have been posting in a paid campaign with your AI agent without disclosing anything until you get caught if you want to present a solution you better present a solution that is real and works. You are going to have more chances of good reception by the community. You've already seen the first response.
Then, assuming it works, we'll have to see if it gives false positives and such.