Got you! Apart from this being likely a scam, I was still wondering whether it is true that CMC builds an average of all exchanges' volumes because that would be super skewed if fake volumes are included.
Coinmarketcap has long been criticized for taking information about trading volumes from those exchanges that were seen in an artificial increase in trading volumes. Therefore, information on many projects may not be displayed correctly. I prefer to use other analytical services to more accurately determine the actual trading volumes and potential of projects.
I don't know what the current conditions are to get listed there, but if it's a condition to have a certain volume there is of course the incentive for projects to fake volume on those exchanges.