I doubt that, primedice has been honest and fair since day1, I seriously doubt they will scam somebody over few fraction of a coin. I remember they even paid Hufflepuff 2000btc
If someone says that PD is a scam and doesn't show any valid proof, he's just an attention seeker.
I know and I think the guy just lose few satoshis on primedice and now he is spreading fake news of scam, like what others did in the past. Such people dont know how gambling works