That doesn't really clarify your position. JSX is a syntax, why in the world does that cause maintainability issues? And that tweet is a massive straw man. It's poorly spaced, poorly written and YEARS after React came out it shows that people still don't understand the difference between separation of concerns and separation of languages.
I know React can be written without JSX as well, but frustratingly most documents/resources online are all examples with JSX.
And then, this:
https://twitter.com/thomasfuchs/status/810885087214637057