yes it's true, I leave it because if you increase any amount, you can't recover. because it's scam sites.
You really don't have to create shill accounts to lie about a reputable dice service.
Maybe you're just annoyed because you're some sort of compulsive gambler and you've thrown away too much money there. Not sure why you're calling it a "confirmed scam site", since you're not actually confirming it yourself and no one else has confirmed it.
Their provably fair mechanism works anyway. You basically can't be scammed on PrimeDice because you can verify every bet if you need to.