A common complaint about Angular 1 was the steep learning curve and wide breadth of new terminology. I honestly do not think Angular 2 does much to address these concerns and in many cases I found Angular 2 to be more complex.
Angular 2 First App Post-Mortem
Mike Ryan
18020

Thats a real shame. It may prove to be the downfall of a framework which has huge potential but is yet again complicated, hard to learn and difficult to bring in to the enterprise space. I wonder if these concerns will quickly addressed once it hits first the real world.