I mean, we can all agree, I imagine, that many pages have too much JS. But then what do we cut? My idea of what's "useless" is probably different than the people cutting my checks. Saying pages don't need "unnecessary" JS is tautological but not really illuminating. I do think there is plenty of reason lots of people would benefit in their work from single-page applications, not to mention video and audio that would dwarf the JS anyways.