DL has been an issue for a while. It starts with Roach. I've said before that when Saban brought him back on staff, he was put at DL coach, which is where he'd been at Ole Miss and other stops. Saban felt he would be a better LB coach and the intention was to move him there as soon as they could. That never happened however, and to this day, he's still at DL. But, he's not a very good (SEC level) DL coach and the development of his guys is not close to where it should be. Along with that, UA has had issues in recent years getting top DL... talking about guys like Peter Woods and players at/near his level. Other schools recruit against Bama and hammer the "development" angle which has been a thorn in UA's recruiting side (some also overpay for them). Lastly, some of the players Bama does have are not necessarily physically built for the schemes Bama sometimes runs... they are just undersized and overmatched.
A week ago I would have said YES, though I did warn a couple weeks back that penalties were still an issue during fall camp practices and scrimmages. What I didn't expect this year was the dumb penalties... personal foul type flags and such. Yesterday made me question how disciplined this team really is. If they didn't change their behavior in other ways from last year, would the overall team discipline be any different? I don't know yet, but it will reveal itself soon enough.
If a player gets out of line like Moore did last year at Vandy then I know they make them do some stuff as a punishment. I'd imagine it's a case by case basis. If a guy gets a flagged because he hits a runner who it 1/2 step out of bounds, I doubt the staff is going to do much other than point it out in film review and hope they avoid it in the future.
They do tackling drills during position stations and stuff, but it's a lot of tackling dummies or thudding. There's not a lot of Oklahoma drills going on these days, but that's anywhere.
Can they? Yes. And they are going to have to or teams will rush for 225+ a game against them and move the chains at will.