When I look up "axe to grind" I see this definition:

have a private reason for doing or being involved in something.

I have never met Professor Boaler, nor do I have any private/hidden agendas. Do you simply mean "someone who disagrees with" when you say "axe to grind"? If so, it's somewhat of a meaningless epithet. If you mean the normal definition, I'd be curious what evidence you have for that (related to Professor Conrad, or me).

Well, let's just agree to disagree, then.

If you won’t say what you mean, there’s no other choice!

Oh yes, there is another choice. Rather than assume that what I mean is the dictionary definition and asserting your opinions, why not ask some good questions?