Hello world might be simple, but you don’t have to build very much before you start to run into problems with the simple “props down, events up” and you start needing to learn about contexts, hooks in general and so on.

Hooks is really one of those things where you need an IDE to tell you that you’re doing it wrong, since there’s a whole bunch of footguns. It’s doing its best to solve a hard problem inside the limitations of JavaScript, but it is essentially a kludge.