Aren't they about 5 years late? JQuery was an absolute lifesaver when we had to deal with IE5.5 and IE6, there was no querySelectorAll, the event model was different in IE vs. the rest of the world, many CSS properties had to be prefixed, and the box model was all screwed up. All of those are fixed in modern browsers, and most of the time you don't need JQuery at all.