Some junior developers don't bother to learn them, and they stick to inefficient and messy classes. This is pretty sad, as I put in quite a lot of effort to drive the amount of HOCs in the codebase as low as possible, so people don't have to deal with old messy react.
The sad part is that hooks are much simpler to understand, use, and they result in code that's better in every single aspect. After reading through proposal and docs for it, writing hooks felt natural and easy to me. It's a much better API that gets closer to what I saw in react when I used it for the first time.
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