For what it’s worth - as the coolest guy that I know, I’m using react.

Not cool but well supported and easy to work with.

As other points out if a piece of js is cool today it is outdated somewhere next month.

Having worked extensively with both the old angularjs as well as angular 4 and 5 my recommendation is to switch to the new angular if you are going to keep developing it.

React is still cool and that’s been the preferred thing for awhile now

You own a downgrade + a response :) Angular doesn't have to be cool to works. It's a mature framework. I find it very useful and I can do anything with it by now. Since it's ok with object oriented concept, and still actively backed by google, it will stay attractive in enterprise, most than any other js framework.

Don't forget that you also need to enhance your resume :-).

No, but whatever is cool today in the frontend space, will not be three weeks from now.

This is a major issue.