Coinmarketcap is the real reason why so many new projects devs are misleaded, they go to CMC and pick from the top rated exchanges to list their tokens because CMC gives all bad exchanges good rating, that's very misleading ...
It is not Coinmarketcap's fault that it shows incorrect trading volumes on cryptocurrency exchanges. Coinmarketcap simply transmits the information provided by these exchanges. These swindles are engaged in by the exchanges themselves to attract the attention of new participants.