Exactly yhis is the point PPK is missing imo. A generic structure is offered by Angular, versus the mismatch of libraries, plugins, templating engines (all with their own bugs) that we had before.

I've built a lot of HTML5 over the years, and handing over projects that include your personal preferences and nifty things (even if it's 'Object Oriented' Mootools) can make another developer that has no prior knowledge of it decide to throw everything away and start from scratch.

At least angular provides a standardized and documented way of doing everything.