Already visited your site recently which compares gambling sites and I loved the design, but this paid forum posting approach could help you guys receive more exposure. I would suggest conducting a signature campaign here in this forum too which could help in the long run.
Never heard of Bitz and it would be better if you paid using popular crypto like BTC etc. Also, you need to implement strict measures since spammers will flood your forum before you know it(Multiple moderators etc).
They stated that you collect Bitz coins which you can exchange in bitcoins so in overall they pay in bitcoin. And of course everyone knows that strict rules are needed for minimizing shiftposting.
OPTo be fair I can't say that domain is something great, idk from where that name comes (it can be unique and memoriable but still I think you could find better one). Also as I see it's not only gambling related and there are discussions around economics and etc, that's ok.
I think you have to make your forum center of crypto gambling world where most gamblers will register on your forum instead of other, casinos' private ones. If you collect a lot of gamblers and your forum will be really active, then you have great possibility to monetize it pretty well which includes ADS from crypto gambling websites, sig campaigns and etc. In this case I think bodybuilding forums can be a great example of success.
Paying with Bitz coins seems to be one of their strategies in promoting forums. If they pay in the form of BTC, certainly the pay per post will look cheap but they are quite smart here.
For domains, indeed I think it is not brandable and difficult to remember by users, not only that the domain looks so excessive. Maybe they can change it to a more simple, brandable and easy to remember name.
You should at least put up some considerable rates because too much effort for just getting 50k sats.
