Manipulations have always been and will be and this is not only in the crypto sphere. I really hope that erc-20 will move off the ground in 2020 but I prefer to trade bitcoin and ether.
I believe this, for manipulation of the market will indeed happen but we do not know how much market manipulation for now. for me if I see and know that the market is being manipulated then I will distance myself from it because I will not take a big risk if I know the market is being manipulated.