I tried htmx, but syntax is horrible, so 3 years ago I've created uajax universal Ajax forms and js-ajax-button.
Add class to any form and it is ajaxed.
I even released it on github
The js-ajax-button has similar approach. Add class to button that have data-url and it will make request to it. This is small func I use, but with uajax is so powerful, I don't need react or htmx.
But it is hard to sell something that eliminates using javascript.