From what I can tell, these complaints add up to this:

Someone wants proof about bankroll, dadice decides not to provide proof.

Is there really anything more to it than that?

I can see why they wouldn't feel good about revealing their resources to Stunna (their biggest competitor, right?).

EDIT: I also want to stay away from any drama.  I'm not an investor in the site but at the moment I'm not seeing the sketchy part of this and I'm wondering if competitors of dadice are merely stirring up FUD to hurt their business.  I dunno the facts, but I'm curious about the motivations of the parties involved.