Human is greedy creature so as long as they can achieve something profitable , they will do anything although it's risking their wealth
By means of answering this I would say this from what I know and learn. I am one of those people who just guessed the market which I do which is base on past markets history and thats is for me fine its because people are seeing interest if they want to go and the flow and invest to see if there guess its true.
Personally , crypto market is far more unpredictable rather than ordinary stock exchange so eventhough you've learn in advance, you still able experience loss on crypto trading.