Its not a bad article, this is an honest and well-described article with lots of research including actual data (stats). Based on the feedback, its seems that the community love it.
As I previously mentioned,
You should be aware that the comparison between these two technologies cannot be fully covered. Angular comes with a complete framework (MVC), while React is a fronted-library with lots of open-source packages to integrate with.
I love Angular, I use it daily at my work. Does it mean that everyone should use it, no. It depends on the requirements, complexity and the background employees have.
Stating this is bad does not contribute to anything, what contributes is that you describe why it is bad, what figures are bad, what data is bad, point at something that is wrong in the article.