I don't doubt whether author of Matthew thought Jesus was divine. I wonder whether he thought Jesus was GOD. He obviously believed Jesus was the Messiah, a second Moses, a divine emissary.

Yes, I've heard of the Great Commission. Matthew postdated Paul's mission to the Gentiles, after all.

The issue is, what was Jesus's conception of his mission? The story of the Canaanite woman is obviously allegorical. But does it also incorporate some recollection of the words or sentiments of Jesus? We don't know.

I'm amused you think you have a handle on the "correct" interpretation of any thing in the NT. Well, you don't.