Do not be subjective just because you have made a lot of money in the virtual currency market that you can easily make money in other financial markets. More than 95% of stock market investors have lost money for this reason.
I agree with you as your points are absolutely right. The new traders who for sometime had made some profits think that they have mastered the markets, but unfortunately it isn't easy to master something like trading within short time. They might make some amazing profits due to the collapse of markets without even knowing much about the collapses, but they aren't aware about the actual thing that could happen in their life which could cause panic in some of them.
Crypto-world is something different than stocks, but trading and making money in this world is same as those of stocks or any other financial markets. They should study the markets carefully, and do their research completely, and have some experience time to be good enough as traders. Because the ones who doesn't know much about a market are the ones who might be preys to their own illiteracy sometimes in their career.