Without downplaying all the effort being put into this, I think we're just digging a deeper hole.
Websites do more or less the same thing they did 15 years ago but they are now 20 times more complex to develop and maintain. A good amount of developers would rather donate a kidney than write CSS. Accessibility is a hack. Performance is getting worse despite us having better than ever hardware. We're spending large amounts of time reinventing the wheel. JS is a horrible, bare bones language which is why you can't get anything done without 100 packages.
It's time to move away from HTML/CSS/JS. They worked great for as long as they did but instead of further contributing to the mess that they've become, we should be looking into alternatives.
20 times more complex - this comes with doing more. 15 years ago there was no CI/CD.
Write CSS - don’t have to given Sass, components, and bootstrap.
Performance is worse - look at v8 benchmarks, look at webgl and Wasm. The browser itself can run much faster today, and people are doing more with it.
JS barebones - just one package. https://github.com/stdlib-js/stdlib. - and the node ecosystem is a feature not a bug.
Look elsewhere - every other UI framework we’ve tried before has been worse in terms of compatibility, functionality, flexibility, and available prebuilt tooling.