Complaining about his weight as a freshman is like elevating a draft prospect due to being all state in high school. A better indicator of his future is how hard he's worked overall to be where he is now and that includes studying his craft. He's shown to be best in this draft at processing and there's no reason to believe he won't stay in good enough physical shape to use those branes.
Before anyone says he just got in shape for the Pro Day, this is him in Nov, 2019.
Dude will never be a strong man nor running QB but the weight thing is much ado about nothing. He may be great or bust but it won't be because of a belly. Not one scouting report says anything about a tendency to put on pounds.
His success will be determined be whether he can maintain his accuracy and still get enough on the ball when needing to throw off platform in he NFL. Whether he can minimize those situations with his ginormous brane.