I think he is just given coinmarketcap unnecessary stress to start thinking there is a loop hole on their system, where hacker can enter through to manipulate their system, because before this guy can do that, forget what he is saying, he will really need to get to the database of coinmarketcap to actually manipulate some script, and I am sure that coinmarketcap is not that loosed to allow that to happen, except maybe it is going to be an insider job with the developers or team of coinmarketcap.
To fake volume requires you to have personal access too to the coin you wish to control, and if this guy is really able to do that, they it is finished, cryptocurrency market would no longer be taken serious again, because everyone will virtually term it as a fraud market.
