I don't really understand your point here. You already have the huge "skeleton" of the browser, the OS, etc etc. And if you look at many other UI development te

I don't really understand your point here. You already have the huge "skeleton" of the browser, the OS, etc etc. And if you look at many other UI development technologies such as the Microsoft or Apple stacks, you'll see that they have a similar amount of "stuff" built in, you just don't have any choice in the matter. On the web we have more of a choice of what "skeleton" to use, at the cost of... having to make a choice. If this is too onerous, you can still just write in vanilla JS.