Should he have made a scam accusation? Probably not, PrimeDice is extremely trustworthy in my opinion. Does he have the right to? Yes, if it was any other site withholding $150k for almost a week, no one would have a problem with it. Personally, I think it sets a bad precedent to ban users for speaking out publicly on issues like this.
Stunna made it clear that he is not banned,they only ban users who try to exploit the system,be in the form of faucet farming without any deposits or the famed hufflepuff who knew the seed before rolling,prime dice made the delay and they compensated with a big bonus and it is nothing new ,i have seen them compensating with big bonuses for the delays caused ,i do not think any other site would give away a big compensation for the delays caused.