As a primarily frontend-developer, I can attest to this sentiment. I should add that most backend devs I know understand the basics of HTML, CSS and Javascript, but they're less interested in learning new framework/library/template system constantly. I have to admit, I share that attitude.
It's funny how webcomponents alone are touted as an "alternative" to a framework, despite only being one component (no pun intended) of something that solves the problem of UI state-synchronization on the browser. A better comparison would be comparing a combination of custom elements, server-side rendered HTML, and proxy objects to some SSR framework like NextJS, Remix, etc.
