Because ponzi is the definition of scam, you can just search on wikipedia, it will tell you its a scam, if you search roulette or dice it doesnt say its a scam.
Scams are usually where a person gets duped into something without their knowledge and Ponzis are scams because in the real world their nature is hidden, but the ones in the gambling section here aren't so people know what they're doing when they send them money.
Provably fair and odds, what are your odds on ponzies? Uncertain, no one knows, the owner could run any minute with your money.
Its like smoking, its bad and everyone knows it, yet people chose to do it, but that doesnt make it a good thing, it only makes them stupid
Just because the odds are uncertain doesn't mean anything especially when people are
willingly taking the uncertain odds, and like whether someone chooses to smoke or not that is their choice and you have absolutely no say on that.
I agree if something is clearly labeled as a HIYP/Ponzi then it is not a scam at all. If the creator tries to hide that fact then yes it is bad/scam.