Well you do not need proof to be cautious. Any one who is preferring betnomi over so many other credible options can do so on his/her own risk.
Let them prove that there are no super users on their platform. What  kind of gaming licensee they have regarding poker room.
I am just warning other people that does not need proof.
You can give me negative trust (like one coward did), but I believe that I am asking some very important questions here.