that was not the reason dude,if you are ever joining that kind of group you should understand what i am talking about.
market was not affected by those kind of group but instead the project itself.
but it did not push it too much but instead they were creating an opportunity for themself instead of pushing the market.
for example OrangeCoin,on their group they will ask you to buy it because it will go up in a few days later.
but the fact is that coin gets pumped before they are telling you this for 20% but its total volume did not exceed/more than 1 Bitcoin.
those kind of group took a profit from their members for at best around 1 Bitcoin or even less than that,so assumeing them pushing the price and creating a FOMO for the market itself was false.
the only who has a resposibility to create those kind of FOMO organization or corporation,not pump group.