I definitely don't disagree with your statements, but I think OP meant more akin to "the web is not for running other peoples code". Ie, the web is for content, not applications.
This may not be what OP meant.. but it's something I can agree with to a degree. I love web apps, don't get me wrong, but I wish we had meaningful fallbacks for those who want content without features.
The more capable the browser gets the more people will turn off these capabilities. I love JS and the web, yet I have JS off by default! Mostly because it gets rid of a lot of crap, but I also don't trust every single web site I visit.
