React's popularity makes it popular target for (sometimes uneducated) criticism. JSX is one of common targets. Library's size is other. Misconception that its just VDOM is another. And then there's popular FUD about how FB may nuke your project on a whim due to patent clause in its license.
It's hard to believe people say so much random bad stuff about React when it actually has a really good track record with developers and companies and various scales.
