Some large enterprises (including the one I working in) are using it as a next gen technology to upgrade client facing portals.
I'm not in WEB Development area and I think it's not the best approach, but because this is happening - angular.js is going to have very long momentum.
There used to be a ton of Angular.js posts on HN (even as recently as a few months ago). Now the only ones I see are generally trashing it. So if HN is any sort of representation of the community in which you perceived a "fad", then it seems to be mostly dead.
A fad is cool. Angular already transitioned from cool to just a good frontend candidate. I think you might want to look at React to hate now.