I started working in the early 2010s doing stuff on the backend was pretty normal with asp.net razor pages. Going from razor pages + jquery to AngularJs was one hell of transition.

I think i can like HTMX because its backend agnostic just template it out and return the html. Given 99% of the angular work i do is "get the json, render the returned json to html in angular". I think HTMX can pretty much replace angular with those sort of tasks. That makes being full stack dev quiet easy only need to know my backend stuff, html(x), css(tailwind). Maybe you need some lightweight frontend state framework to do a bit more in the frontend. But its a shitload less to learn than angular, node, typescript, build tools etc etc.