Wait, do you really experience cognitive burden when switching between html, js, and css? It surprises me if you do.

I'm talking about switching between a context where there are first class functions that can be easily passed around, to a context where there's some archaic and magical, non idiomatic convention based on string based dependency injection, or magical way of writing attributes.

Except JSX isn't JavaScript, and no one uses React without it. So it's arguably just as much of a cognitive burden.