It would be better if you could provide some links supporting those claims, because we don't see people reporting such scams in the scam section
I'm guessing that the OP is referring to the reviews on TrustPilot (1.1 out of 5), quoting the link for reference.
It certainly doesn't have the best reviews, but I don't think any centralized exchange has positive reviews, Binance has 2/5 rating on the same website, Bitstamp 2.1/5, Coinbase 1.5/5.