Comment by CrimsonRain

Ultimately, HTML/CSS are too low level tools for most people. We should have had Flutter/AMP like features (sans specific company dependency), right in the browser.

It'd been amazing if people can write <appBar></appBar> and get a consistent appBar that works in different display sizes and comes with accessibility built in; in all browsers. We have done so, in flutter, in iOS, in Android. But why did the browsers never bother? I remember HTML4 feeling dumb and HTML made more sense when I learned about HTML5 proposal. It finally made sense how HTML should progress but then suddenly, after years, everything is still the same?

As for your last paragraph, you mention how web actually delivered in terms of indexability and I'm really disappointed that Flutter (your primary focus right now I assume) is not prioritizing this. Flutter is amazing but it really needs to deliver what web delivered and them some.