The difference is crypto(graphy) is "old" and established, while crypto(currencies) and blockchain are new and trendy. It's like what happened with the JS frame

The difference is crypto(graphy) is "old" and established, while crypto(currencies) and blockchain are new and trendy. It's like what happened with the JS frameworks, which have stabilized now a bit. Everyone wanted to create a new amazing project, everyone was lured into using X or Y framework because Z. But not many know a lot about them. Same with crypto, people see it's trendy and go in even if they lack all the technical knowledge around it. Thus, scams and hacks are everywhere.