Web components are a bit verbose by themselves but used with a library like lit.js you can build a framework agnostic component library. Angular and Vue support WC out of the box and they have a wrapper for React. I think the only thing missing(or not mature enough right) now is SSR. There are probably libraries other than lit.js that take the pain out of writing WC.

I was skeptical at first but I've seen in production a lit.js/WC component library used with React and Angular successfully in the banking sector and it works surprisingly well.