Yes. I feel much more productive with React components as blocks than creating custom blocks with Gutenberg. It is also much simpler to render them with a React-based frontend like Next or Gatsby.
To me it’s not a choice of one versus the other. I have a couple of projects that have custom React components. I render those components on the front-end, and also import and use the components within the Gutenberg block. That way they share code, and stay dynamic.
I can even put children blocks within the custom component, and it will render. Especially handy for things like InpectorControls.
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