I wouldn't put it exactly this way... It's definitely risky. On the other hand, what isn't?
Even usual food could be dangerous because of potential choking, food poisoning, etc.
I believe before getting into crypto people must learn the basics of security. Of course, we can also learn it after we start trading crypto, but it might prove to be too expensive in the end...
I agree. It's not that "dangerous" if you know the basic security rules to work with it.
Fiat could be too dangerous, too. For example, in many cities, if you go for a walk with a lot of cash in your pockets in certain neighborhoods, you might even get killed. That's how dangerous fiat is.
So, instead of saying it's "dangerous," read the security rules first and you're going to be fine.