Comment by afiori

The reason react sites are bloated is because there are a lot of things that are easy to do once you have better DX, there is nothing stopping you from making completely static sites with no js (solid-js 2.0 has a whole "htmx-like" mode that lets you have good interactivity even with js disabled).

WebComponents are useful for cases where you want something slightly more integrated than an iframe or want to make a library of small widgets