I'm simply curious.
He's an incredible athlete, certainly a winner at the college level, a good leader, and nobody doubts his heart and drive. Unfortunately, that doesn't necessarily translate to being pro QB material.
From what I've seen (and what a LOT of other folks have also seen), Jalen Hurts does not do a good job of looking for WR3 and WR4 before deciding to run. Most of the time, he looks for WR1 and checks off to WR2, but if neither are open, he usually scrambles for yardage. He's missed seeing a lot of open WR3 and WR4 on a regular basis.
Also, he doesn't hit his receivers in stride as well as Book does. In case if you haven't noticed, once Tagovailoa took over the offense, suddenly a lot more of those 3-5 yard passes became 15-25 yards due to the QB being able to hit them in stride.
Finally, he doesn't do a very good job of calling audibles at the line when it comes to restructuring the pass protection scheme. He can get away with it at the college level, especially given his excellent athleticism and that he has always had an excellent offensive line blocking for him, but in the pros, they expect you to be able to make those calls, and do so on the fly. If there's an unfavorable matchup on the line, then you'd better be able to shift assignments at the line, or else you'll get clobbered by a 265 lb defensive end who can run a 4.6 40 yard dash.
Running QB's don't last very long in the NFL, assuming they even make it in the first place. The NFL scouts know this, and anyone who isn't blinded by pure stats knows this as well.
On a more positive note...
One of the best QB's I've ever seen make pass protection audibles was Tommy Rees. Even if he had a candy arm, and the feet of a tortoise, I'd have to say that he has one of the sharpest eyes and minds when it comes to making the right call, in addition to shuffling around in the pocket. If he can continue teaching these skills to our QB's, then it's going to be a most excellent boon to the team.