I'm not ignoring the fact that some might tagged all cryptocurrency including Bitcoin bad after that but unfortunately just to ignorant to see the difference.
A lack of knowledge = ignorance.
It's a usual case where newbies who enter this space tend to have no knowledge, so they can be considered ignorant, but what they do is what proves that they are actually ignorant and not only ignorant about this space. Instead of trying to learn the ways of this industry, they start chasing profits. I don't know why some people think they can make money from somewhere without even knowing about what they are getting into. Can you become a doctor without having a medical education? No, you can't; similarly, you can't become a profitable trader without gaining knowledge about it.
So, newbies need to use their brains and try to gain some knowledge before they start making investments or trading because even if they manage to get some profit initially, they are soon going to lose more than what they gained.