I was only active on that other forum for a brief while so I am not too familiar with how things work, but what you describe sounds like rent extraction. Charging people to delete or lock posts is just a dumb design and unnecessarily greedy.
You should have used a better excuse than this, bro, it is not sincere. It's all for the money. I wonder about their ties with the mixer that warranted such loyalty to move with them when they are not their direct partner. Or is it for Bitcoin? Bitcoin doesn't need anyone to advocate mixers for it if not for their own pocket. Have you noticed that most of them have abandoned the accounts now, when the chance and the payment plan were not the same as expected? Why not stay and advertise it for free there if they are so particular about mixers and not the money?
Of course it’s about the money. That’s why people are on Bitcointalk also. You can’t act self-righteous when you are literally being paid to advertise a casino. Nobody owes a forum their loyalty — that’s an absurd concept. It’s insane, control freak behavior to care so much about where people are expressing themselves and why they are doing it.