I understand that FCC officially pushes React, but really, since we are (mostly) all grown-ass-adults, we can do what we like 
FCC likely won’t validate your work for the cert, but the cert doesn’t mean much to me anyway, it’s the projects I build on the way. So to me, a nice looking Leaderboard in Angular 2 is better than losing the will to live with React.
I’m still plugging away at learning React at the moment, but my motivation is next to none. I haven’t given it a good crack yet, though, so I’m gonna try and get a project done before I decide whether to kill it. Usually, I code every night for FCC, but since starting React I’ve started finding procrastination routines kick in: ‘Oh, let’s install a dual boot of Linux’, ‘Oh, I wonder if Walking War Robots or Vainglory has had any good updates since I started FCC?’…