> I think "debatable" is rather kind :)

Well, I think he has an interesting data-point, and makes some interesting points despite maybe making a somewhat incorrect generalization.

But even that generalization points to something I find interesting, which is that Python and JavaScript (maybe Ruby as well) possibly form a separate group with the characteristics he describes.

I also found the observation that Mock object testing doesn't seem to respond well to changes in the underlying code interesting.

It's that mix that makes it "debatable" ;-)