Why Yahoo and Forbes’s method of Market Cap is extremely prone to manipulation

Lately there has been a debate on whether to count the entire supply of XRP on the market cap or only count the circulating supply and leave out the 50+ billion locked away in escrow. Yahoo counts all the coins, but only for XRP, not for any other crypto, which I find highly inconsistent and therefore not valid if you are going to treat one crypto completely different from the others. For that reason and that fact that it is so easily manipulated(as I explain in the video below), I have to take CMC’s side in the marketcap debate.