I did not read the article you have posted, can you please give a more detailed overview about what you are saying here? I regularly take a look at coinmarketcap to see the prices, but do not read any articles there, so I do not know how they influence the prices. They might have some insider knowledge if they receive secret infomation about altcoin projects and can make usage of it, but yu see the prices live and can instantly act.
i would suggest reading the article... it provides extensive evidence about coinmarketcap manipulating perception of coins by refusing to update or deliberately listing inaccurate info regarding supply or project links...
there is no reason for me to slander coinmarketcap, i just believe as a community we put too much stock in their information and take it as god's word that it is true.