Um, I mean, the contention of Mormonism (and Christianity in general) is that He did.

That same being endorsed baptism by undergoing it himself.

This may seem contradictory, but becomes much more tractable if you're open to the idea that "redemption" is just an abstraction, with multiple inputs, some provideable by Providence, some provideable by others, and some provideable only by the subject in question.

Right, I am sorry, as soon as I hit reply I realized the mistake I made and edited my comment. I was so focused on the baptism thing I wasn't seeing the whole picture :)