I work for a company with a couple of heavy Angular-based apps.
They are pretty easy to support/extend for anyone with a decent level of JS knowledge.
The backend API they are talking to and some of the business logic in the apps is kinda tricky but that's not angular's fault per se.
The downside is for candidates looking to add a hot shot tech to their resume, Angular isn't all that sexy, but for anyone with JS knowledge willing to spend a couple of days getting up to speed with the app itself (the "tool stack" is minimal - npm, grunt, bower, browserify and since it's an existing app they are learning by example) - this is almost a no-brainer.
The downside is for candidates looking to add a hot shot tech to their resume, Angular isn't all that sexy, but for anyone with JS knowledge willing to spend a couple of days getting up to speed with the app itself (the "tool stack" is minimal - npm, grunt, bower, browserify and since it's an existing app they are learning by example) - this is almost a no-brainer.