Good article. I'd actually be afraid if he didn't say he was here to start. Why else would he have come here.
As far as knowledge of the offense, it makes sense that Joe is ahead of him but Keller is in another class when it comes to talent IMO. He can make throws that Joe just can't. Like a deep out, from what I have heard.
really
what would everyone think is he was to say "I am just hear to walk-on, run the scout team, pay for my own college and ride the pine next year"
I am not sure what everyone would think, but give his situation if he said something benign like "I am going to try my hardest in the spring and see if I can make it." you might think he's a bit timid about the whole situation.
Instead, he said he was here to start, as he probably should have.