Perhaps, time to blame managers for situation like this one. What's the point of employing a non- gambling poster for a gambling signature campaign.
It's not the first time I have done this. I accept non gambling quality users and monitor them. If after a certain time, I'm not satisfied, there have been few cases where I sent them DM to not post in gambling section or at least made it as their wish. It's better to get a quality non gambling user than a genuine gambling board spammer. Maybe it's just me who thinks this way.
Your client owns a casino, and their target/potential clients are on the gambling board; selecting a high-quality non-gambling poster is okay, but what benefit does it bring to your client?
The problem is you guys do not pay attention to the gambling posters on self-moderated threads mostly because they don't have tons of merits and end up with AI chatbot merchants- this is general observation.