When you have overwhelming talent on defense, you can drop back and react. Your speed and size advantage can overcome the opposing team's offensive intent. Essentially, you can do just about any scheme you want. I can't blame the premier program in the SEC for this scheme implementation. But when Alabama runs a particular scheme, and the vast majority of other team's DCs don't copy it... where did UL decide that "we and Alabama" are birds of a similar hue... and we should play a "Allow their QB to think they he throw to this or that guy... but our closing speed will either pick it, deflect it, or hit the guy so hard he'll throw his groceries from last year?". We are not Alabama.
I've watched our defense make every QB, including the SBC, look like NFL prospects. We allow and react. It doesn't work. No player we recruit, and they all see the spread in HS now, is going to feel comfortable not being a "I'm going to clean your clock football player.". How can this "Only molest me a little bit... and then I'll try to stop you" defense be good for the psyche of a southern defensive football athlete?