Technically yes, but what if someone only uses hooks and has never used classes?

And, viceversa, since there is now a lot of people moving to hooks and producing React literature for hooks what if you only have used classes?

So now, to be able to read all the React literature one has to understand both methodologies.

> The developers and documentation even advises against rewriting old components with hooks unless you need to.

It doesn't matter. A big chunk of the JS community is hype-based.