Every thing Mcaffee mentions gets pumped and then usually dumped. Why are people this stupid? He has made himself a prophet in the cryptosphere and is using it for making profits.
He mentions coin of the week and it grows by 20% in minutes.
Because prices of most alts are pure speculation and bitcoin it self. They are made to make money and people often buy when they hear news about it. Happens with raiBlocks as we speak it will be added on binance, since they have added voting for it and guess what price is raising and other influencers are pumping it I see it all over youtube and reddit.
As it goes for Mcaffee it's not his fault for pumps and dumps but its simply because people trust him in a way and they don't trust themselfs since many crypto traders are first time traders in their lifetime and when they hear from somebody with good image they will want to get in and buy that coin, which is great for people who buy and sell on the news and who make these dump&pumps schemes (which are illegal, but here its out of the control).