Agreed.
I think Canales's primary objective in everything he does is to make the team better. I don't think he has any particular attachment to Bryce. He was brought in, in part, to give Young every chance to succeed. And despite assertions to the contrary, Bryce has improved. Whether he improves enough to keep him after this season depends on a number of factors, but I don't think Canales would hesitate to upgrade if he saw a chance to improve at QB.
For example, I think if Bryce struggles this year, but the rest of the team performs well, I wouldn't be the least bit surprised to see us take a qb in the first or second round.