I do agree with you, but to play devil's advocate: This article is currently #9 trending on the front page. I've meanwhile seen similar critiques of React written in a different style, and seen them not get a vote or comment. Perhaps those rants do serve a purpose?
Don’t talk down and condescend to your audience for no reason
I think the article should be rewritten and all the ranting removed
It’s also difficult to follow where the author‘s going with all the side rants and unrelated remarks
And yes, that is considered ranting, contrary to what the author claims in the beginning of the article