In the last few years I've moved away from JavaScript and frameworks in a lot of cases because writing raw HTML and CSS was not cumbersome, involved vastly simpler tooling, and didn't involve other folks needing to learn some obscure framework that may have gone out of fashion. HTML and CSS are here to stay and currently they serve their purpose very well. I don't agree with your take (J|T)SX obscure the HTML whose trench coat it's trying to wear with arbitrary rules that produce unexpected effects. If author HTML is considered a burden, I'm not sure how keeping something XML-like is going to make the ergonomics or readability better.