yes and no. I agree there is some amazing things that can be done with larger websites, but one has to wade through a lot of unoptimal sites to find the good ones.
Correct me if im wrong, but arent you trying to introduce a space where its impossible for larger websites to exist thus everything is restricted to the bare minimum website features like its 1999. I do not see the point in that, to me the problem isnt a blog with fancy JS vs a blog with static text. Its about corporations exerting outsized amounts of control over how people interact with the web. I want the new web to solve that problem and also be able to serve 4k video.
You can already do that. If your home page is a fediverse feed or client, the users provide the content without an algorithm. Many people who have a browser with a Google search bar might think corporations control a lot, but one can set a different browser, DNS, and search engine. The thing Steve Jobs did was simplify the out of the box experience, so when they bought a Mac, there'd only be a dock with Safari at the bottom. One could develop an open source machine with a very unitary goal of accessing a lightweight web using a protocol or extension similar to No script but the average non-technical user might not know how to do that.
Of the many Linux distros I've tested, maybe a handful are actually easy to use and not heavy. One example is Bodhi Linux. But I have something more like Tiny Core Linux in mind, except polished (it features a dock, surprisingly). If the hardware could be developed for this too as open hardware, there would be the added advantage of it having more ways to improve it. I'm a bit oxymoronic in having a vertically integrated product idea and an open source bias, but a lot of great ideas need a coherent outline, which sometimes start out as closed source.
If the project starts out with enthusiasm but it gets forked, then it becomes impossible to develop one feature that many people didn't realize would be overall a better user experience, or streamlined option, at the very least.