Well said.
That said, there is much that is perfectly correct in Raymond's article, and it would be a good reference if it were written in a more cautious and less ranting way.
At that point, I'm not sure that there's anything left of the article that isn't better stated by you in this comment here. In short, the whole purpose of the article was to rant (which is problematic for exactly the reasons you described).
I have found this most wonderful (if fairly lengthy) article, and thought you would enjoy having it brought to your attention.
It is so good, I think we should include it among the references in the "Politics is the Mind Killer" wiki page. But, before that, I submit it to you, and ask you: is there anything in this article that would warrant its exclusion from this site? I mean, besides the fact that it is about politics, and written by a notorious Social-democrat (And is that in itself grounds for exclusion?).