After having dropped Angular in the 1.3.x days, I was pleasantly surprised by how much it's changed. There are still a few mental concepts a new programmer would have to grasp (DI, observables, OO, type-safety) but overall, it's not too bad. I'm not sure I could call it "simple" though. Maybe I'm conflating simple with "easy". I'm of the few that still believe in Redux though. A one-way data flow, a finite state-machine, a new version of the state on every action.... that just defines "simple" to me. (not arguing at all)