Our GA is setup through GTM now, that is why it's not hardcoded into our head. Really the most important gain we get from hosted libraries is caching. Since any user that has hit a google hosted lib, which is pretty widely used and distributed it allows them to access their cached version instead of sending our another request.
Our site was using hosted libraries, google fonts, and google analytics. All of which seemed to be behind captchas, throwing CORS errors, and 503ing since this morning. Swapped out JQuery cdn for now.