Yes, they would treat him as the next coming of the falling Wilfork. Mayock quotes the proverb, " Those that won't, are no better than those that can't." I think that definitely applies to a Micheal Johnson. Avoid him like the plague.
Smith has never been criticized as lazy. He may well be immature, and he is an underclassman. The only criticism was his weight. So he attempted to do something about that.
He was benched by Saban, as he is required, for violating a stupid, and probably illegal NCAA rule, about not being able to contact or talk to an Agent. Can you not seek a lawyer's counsel at any time that you desire, or hire one? I believe there is an item in the Bill of Rights about that. (Actually, he could probably make millions in a Court test, but it would interfere with his football career.)
As regards his presence at the combine, that was handled poorly, I admit.
But he did say he was not going to participate, as he was not prepared for the combine events. He was certainly on a diet, and lost more than 18 pounds between the Senior bowl and the Combine, and made sure to be measured and document that fact. So he was doing something, and not just loafing. He informed every one on day one, at the combine, of that. And he would depend on his superb film grades, and his Pro day.
Not being available the next day is an easy mistake that more than likely devolves on his Agent, than him.
He won't be there at #23.