If it was "lack of development" as a lot of posters are speculating about as the reason he left, it is mostly on him. I agree, and not just at his position, but there are some players who just "seem" never get better as they go up in grade or even seem to digress as they get older. But, Luke was only in his 2nd year at Nebraska and only his 3rd year (1 in HS) as a QB. He played in 4 games (one a single snap) his 1st year. His 2nd year, he not only played a significant amount, but he also got 2 starts. His throwing was always "hit or miss" but he excelled running. So much, that he played some slot WR. Well, it wasn't just like after 2 starts, 1 TD and 6 INT's, and demoted back to 2nd string, that he said, "This staff isn't developing me to the point I need to be so I am going to portal." IF THIS IS THE CASE, I call BS that it is the staff's fault at developing him. He has less than 3 years TOTAL as a QB, including all his schooling before Nebraska. He earned starts but under-performed/under whelmed. Made really basic bone head plays (though I give him kudo's for trying to do good things but there are times to definitely eat the ball). Let's say a few bounces go his way and he had 4 TD's and 3 INT's and there were fortunate bounces on his bone head plays and they weren't negative plays. I would bet then he felt he was getting the development/teaching he needed. But, really, none of us will ever know why he left. And, AGAIN, like Delancy to Toledo, I guarantee he didn't go into the portal thinking, "Louisville, here I come, baby!!" He is a project at QB but a natural slot WR or even a RB. I just hope that Frost didn't make him stay at QB when he wanted to do something else (though I believe this is not the case).
Now, to finalize. If Smothers, who has been a QB since Jr High portals out due to not playing or having a similar case happen to him as it did to Luke (play, maybe start a few, get benched for someone else) then I will say our staff can't develop a QB (and, who would argue, especially with AM's seemingly digression, though I believe personnel has to do a lot with that). But I don't think that is the case, yet. Luke, for beng in his only 3rd year, at any level, of being a QB was, like 90% of kids today. INPATIENT. He thought he should be a Heisman candidate QB in his 1st start. He wasn't terrible but he saw what he was after getting waxed in his loss, being a TO machine like no one else. So he left, knowing we had Smothers, and Haarberg, both who were actual HS QB's with extensivel HS experience. I am hoping he just did the Crouch "I am a QB, not a WR" and saw that he really wasn't going to hold off Smothers, et al, so he left. But who knows.
I feel good with what we have but we do need to recruit another HS QB. A juco/portal QB? If that happens, probably get ready to go to Smothers farewell party. JMO there though.