this only tells you that these people are "gullible". you tell them ETH or Dash is going to replace bitcoin and they rush to buy them to become rich when supposedly their prices reached $2000 but they face the reality soon enough and have to sell with a big loss and come back to bitcoin and start licking their wounds.
It's mind boggling how stupid certain people can be. In normal circumstances it's common sense that would tell you to stay the heck away from coins that are badly pumped already, no trading expertise required here. But these people go completely nuts on whatever comes at their way, and dive with full confidence into something that is on the edge of falling down in pieces. There is a saying; Greed makes blind - and that's really the case here. It will be a very expensive lesson for them.