Angular 1.x uses a version of JQ Lite, and will utilize jQuery if it's already loaded on the page.

That being said, I don't think knowing jQuery is very valuable for JS developers anymore. Browser standards have come a long way and frameworks are handling your DOM writes for you, so that major use case for jQuery is gone in any website that requires substantial scripting.

Really? what if you have to support legacy apps that are 100% jquery on the frontend / php on the back? It's VERY much still a thing..

Well, technically jQuery is listed as dependency in the bower.json file for Ember.

But I think that's really only so the Ember jQuery wrapper will work properly. So you're still right.