I don't really see the difference between most modern JavaScript "frameworks". It's mostly in the details, and any of them would work just fine. At this point it's like arguing which of X number of programming languages are the best.

Part of seems to be: "How dare people not like the tool I prefer", or simply that people don't want to be bothered to learn yet another JavaScript library (which I can understand, but I'm not being prevented from using the tools I like, just because React exists).

One "mistake" I see React make, others do too, is mixing JavaScript and HTML. I'm still firmly in the camp that believes in progressive enhancement as the correct way of developing for the web. React, Angular and most other modern libraries doesn't seem to share that view.