> we can't bear to work with native events, manage the dom, or build reactivity with proxies or subjects
I mean, you can do all that. And either spend your time writing tons of boilerplate code, or reinventing half of those frameworks and libraries anyway.
And still having to deal with issues like having to remember that they don't participate in forms (more JS to each component), that a11y can suddenly be broken (when your label references an element inside shadow dom), that wcs are not extensible to SVGs (which is important if your field is data visualisation) etc.
At which point you will go "why bother".