It’s probably about time for that to become fashionable again

It's easy to forget how tedious things used to be before React became popular.

Keeping data in sync with the UI was a huge mental burden even with relatively simple UIs. I have no desire to go back to that.

Do you mean subscribing to events/callbacks, manually managing object lifecycle, manually inserting list elements, keeping it in sync with the state, etc, etc. Because that was all friggen horrible. Maybe new approaches could make it less horrible, but there is no way I’d go back to what it was like before React. If anything, I want everything to be more reactive, more like immediate mode rendering.

IIRC its what frameworks like Svelte do when they hit the compiler and optimize, which makes the best of both worlds.