Earlier quoted context omitted.
He literally discusses the origins and problems of various personality tests in his article
"he knew the Big Five was solid as science" His discussion is neither critical nor credible.
Upon reflection it seems like he went overly broad with the scope of this article.
If you’ve already interacted with things like the Enneagram test, you’ll already have the context to deal with his comments.
I learned a ton from this post, perhaps it’s because I’ve had a lot of experience interacting with all the problems and challenges he lists out. I got a lot of nuggets from it in terms of insights into problems I have faced and will continue to face.
Perhaps for the less experienced, this is less helpful, as they would miss this context.