What's left for Web Components to get in order to completely get rid of frameworks like VueJS and React? By getting rid of I mean for 99% of use cases.
It may also mean a light framework on top of Web Components, but getting rid of all these dependencies and ever-changing framework is of course an old dream.
The light framework you're referencing is Lit or Shoelace. Also web components have taken off, just in the enterprise space where most teams are going to be using whatever they prefer whether that's Svelte or React or Vue or Angular - so slotting in web components works.
For everyone else, you start running into the issue of the classic https://xkcd.com/927/ situation. The problem of ever-changing frameworks will always be a constant. People want different things from their frameworks!
It may also mean a light framework on top of Web Components, but getting rid of all these dependencies and ever-changing framework is of course an old dream.