You know what you just did? You gave free advertising to a dice site. I checked out Bitdice before and they are an old dice site with a reputation that is as good as any surviving dice site till now,,, the provably fair algorithm is a standard one like others, and they have no way of knowing your seed or outcome before you roll the dice, so what is the complaint here?
The guy was talking about the rigged blackjack and not the dice game.
I would probably don't mind this guy and with his accusations that is baseless and nonsense. I wonder how much bitdice had "scammed" him?