So, what is your proposal?

Throw away the front-end of the Web and start over with a system actually designed to facilitate graphical applications instead of delivering styled documents.

HTTP can stay, and HTML/CSS can stay just like PDFs for delivering a document, but when it comes to UI components, we should be able to have things as fast and performant as e.g. RedLang / Processing / Enlightenment DR17 / etc without every developer having to shovel megabytes of shim-ware down to the client.

That's a good solution in a perfect world. But that's magical thinking. What's a real solution?

We have a plethora of native frameworks for building UI-s. Some of them are quite well designed. And yet the Web front-end has won against all the UI frameworks designed specifically to build UI-s.

That’s partly due to reach, though. The combination of the browser coupled with Electron eating away at those native UI layers means it unfortunately makes little sense to bother with alternatives, even if the alternatives are better.

I.e, the GP is trying to argue one thing and you’re kind of going down a different tangent.