I’ve never needed to rely on SO when working with VueJS.
The other thing that is frustrating is that the changes across the different versions of Angular are so dramatic that the best way to do things has changed pretty massively over time, and old versions of Angular are still employed pretty liberally by companies that don't want to have to go through the process of porting everything to newer versions. As a result there can be dozens of different ways to do the same thing and determining which is best based on your particular situation is non-trivial.
What breaking changes are you referring to? Ever since it Angular 2 Final, the API has been pretty stable, I've been able to pretty seamlessly upgrade to angular 4+
So it looks like Angular is more complex and has more questions asked and it is stagnating on the job market.
The SNR on Stack Overflow is becoming lower. Many of the more difficult questions have chosen answers which are outdated. Software is versioned and having one blessed and no version tags doesn't work in some cases. Try using the blessed answers to react-router which frustratingly breaks between each version.
Is there a service that does something similar to Parse.com? I would honestly rather pay for that service than run an instance myself.
Sort of sad to see it's less used now, although I do think Cocos2D probably had an impact on the API design of SpriteKit, so it lives on in that way at least.