Totally agree, it's the inevitable result of infinite wheel reinvention; none of the wheels ever receive the level of refinement they need. By the time the first stone wheel starts showing hints of a polished sheen, it's time to go carve a new stone wheel.

I'm a big proponent of browsers including something resembling a traditional UI framework out of the box. It doesn't have to try to be perfect or fit everybody's needs (which is impossible anyway), but it will serve many developers well and give everybody else a solid foundation to build their own (much lighter) stuff on top of.

You tell this to frontend experts and they are totally against it. "Lack of UI customization", "this is already possible", "you should skill up and learn web-tech", "use one of the popular (multi MB) component libraries", "we don't need more bad browser APIs", yadda yadda yadda.

The real reason is that most of them are afraid it would reduce the number of frontend jobs. But nowadays that is already being eaten by AI...