It's a terrible attitude and I agree that sort of thing shouldn't be (and generally isn't) tolerated for long in a professional environment.
That said the article is full of technical detail and voices several serious shortcomings of protobuf that I've encountered myself, along with suggestions as to how it could be done better. It's a shame it comes packaged with unwarranted personal attacks.
You can kinda see how this author got bounced out of several major tech firms in one year or less, each, according to their linkedin.