When btc dump, they dump
when btc pump, they even dump harder wtf
An important amount of the icos are scams, some other altcoins are not scams but do not have a future and are going to disappear after a few years, then there are the few projects that are worth a thing, try to find them and make money with them since those projects are the ones that can make you rich in just a few years, and are the type of projects that everyone is looking for.
Im down with this philosophy, ICO = no way bb. Crap coins = pump and dump? Other alt = nice mixed portfolio, be prepared for most to fail and die horrible deaths.