The comparisons of JM to Jalen Hurts are many and very obvious and it has nothing to do with the color of their skin.
Just comparing their development at the beginning of their college careers: They both were tremendous athletes who grew up playing HS QB. They both were much better with their feet than their arms. They both had decent passing skills, but suffered from inaccuracy, willingness to stand in the pocket, tendency to run before reading, struggled to get past first read/hot route, etc. There is also the obvious comparison of how it took both of them time to show improvement.
The one thing JM does that Hurts didn't do is struggle with turnovers (probably one reason why JH saw the field so soon despite being a true freshman). I also think Jalen Hurts had a better throwing motion than JM at this point in time.
Having noted all of that and considering Jalen Hurts' meteoric rise to his current state, there are two or three things we don't know if Jalen Milroe can replicate: First, can he clean up the inaccuracy and poor fundamentals he's still showing? Second, does he have the ability to process the amount of information it'll take to get to the next level (learning progressions, check downs, audibles, etc). Third, does he have the drive/motivation?
Until we learn he can't do these things, who is to say he can't follow Jalen Hurts' path to success (at least to become a good, if not better than average college QB)?
I guess I'm suggesting I don't think he should pursue a position change.