I think Jason's blog is great, despite the issue you pointed out. Maybe he just creates so much content that it becomes hard to be right all the time, and this topic in particular has some nuance to ir. I think its an understandable mistake and you shouldn't count off good work on the basis of that --- his posts sure helped me lesrn a lot and are my go to source. I'm always happy when googling a particular topic if his website comes up.

That being said, someone did comment on his post a similar point to the one you're making - and in a humble and nice way, even - but he dismissed it without any explanation, and that was weird.