And in the end, you add 10 of those selectors. Then you create a small library so they are all at the same place and handy. Then few fixes to support that one browser in that case. And in the end you have jquery.
I think you're forgetting additional HTTP functionality, rudimentary animations, additional wrappers around existing JavaScript representation of DOM nodes, and a variety of other things that you'll never realistically used but thrown into all your applications for posterity. Because in the end, you had jQuery.
With http2 the additional request is not a problem.
If you don't use jquery, you don't care about old browsers/OS not supporting them either. Also, cdn+caching of the library.
Bytes are bytes are bytes, http/2 or no. It's far less intensive to polyfill what features I actually am using than sending down all of jQuery, and that can still be minified, gzipped, cached, delivered via CDN, and cache-controlled and/or placed in the application cache via service workers (where available).
But I can understand that it's less about the user experience and more about the developer experience nowadays.
