No one gets fired for using React. Vue isn't even shinier in my opinion. It makes the same templating mistakes that Angular and Backbone did.

What are those mistakes? I don't do front-end development so my knowledge is very limited with these (I know the names and a basic idea what they do)

To me, it's the reintroduction of custom templating. I appreciate E4X/JSX syntax because it's just a thin layer of sugar which is compiled to regular JS syntax. It also lacks custom implementations of loops etc, requiring the user to write _Javascript_ not some non-standard templating language.