I wonder if the footprint got smaller or bigger.
Then again, how many folks are using jquery these days? It might be more rare than I think.
Browsers no longer do cross-site resource caching. https://www.stefanjudis.com/notes/say-goodbye-to-resource-ca...
However, it does matter in interactive websites because if the js is light it'll load fast and execute fast and you'll have interactivity sooner. It may be the case that images can be loaded later or arent even visible on the home page. And fonts of course will be replaced once they are loaded and the defaults will be used while it loads so it's progressive in a way.
Whether this whole bazaar is ideal or not is a separate issue :)