When I read some of the thread above what I am hearing is: "I don't want people to be able to run programs on my computer without asking explicitly". Which is exactly what the modern web and modern web browsers enable.
If you learned computing in the 90's you were very much told not to install things you do not trust. Everyone remembers downloading some game from the internet and suddenly their OS was trashed via malware or non subtle virus. The modern web is essentially a giant way to circumvent that. Sure only your browser can get shitted up but its the same browser you do your finance in and has access to your GPU.
Certainly it enables easy sharing of programs but so does something like java. Most OS's still recognize a .jar file as an executable and ask you about it before you can run. They never do that before javascript starts processing in your browser.
There are several other issues here such as: - Many essential processes such as banking, medical records and education all rely upon the modern web paradigm at this point. One cannot simply access them on an e-reader or using a browser with javascript disabled. Are you saying you think that someone should be left uneducated or lack medicine if they don't like running an unsecured browser? Should those with privacy concerns just incur the cost of having one "safe" device and one they do their "interacting with the web" one? - The modern web sandbox includes very high access to sensitive things. Many people's file systems are from a cloud platform all of which malware in the browser can access for example. - The modern web can be highly performant but generally its not and requires ever increasing hardware cost simply to do things like read a book.