Not the scam but the market is not only controllable and one that I know is also the price of eth as well as other altcoins is because bitcoin bitcoin has a lot to do with falling prices of altcoins and I believe that the rise bitcoin price will also increase the price of altcoins.
For sure not of altcoins can follow about bitcoin's price but in other way it can pump and same to other altcoins and im not saying all altcoins can do it also without volume for others.