If you ask which casino, I'm afraid I've forgotten what it was called but the memory of the 100x wagering requirement does go back before. Casinos that don't want to take their business seriously will apply very high requirements so that no gambler can take their winnings freely. And even if the gambler can take it, the casino will apply other requirements, such as the gambler must do KYC but the casino will not agree with many reasons.
Indeed, casinos with big wagering requirements aren't a scam, but many don't even want to try them because it's too much for them. After all, many of us are not big gamblers and only use small amounts of money so it will be a problem for them.
If they are open about asking such high waging requirements for people to withdraw their money from their accounts then they are clearly not a scam, they are just a very unfriendly casino to their customers, and since that is the case then gamblers need to also be very unfriendly towards those casinos, as what is the point of gambling there when you can do so at other casinos that are nowhere near as strict when it comes to their policies?