Assuming the tokens are created by the clubs themselves and not by scammers, after all we know that scammers will do anything in order to get your money, then it is obvious that these coins are a way to get some money from the fans, now if you do not get any exclusive benefit from them then do not buy them, but if you do and you are happy with the exclusive benefits you get then you can buy them with confidence knowing the club will not scam you, however those coins are never going to be accepted in any casino as they are closer to be a form of loyalty points than a real currency.