I think to entice players and keep them, aggy lets the top players go rogue somewhat, which results in lack of discipline, and has cost them coaches. Juggling talent is a tightrope. Talent often assumes it can overcome obstacles because they're good, but at each level, the talent gap narrows. Then what? You can't get guys that want to do their own thing and only play to their strengths. Gotta work and do the shit jobs that earn the big play. That pressure Broughton and Collins apply isn't given.
Fundamental football isn't fun, sexy or glamorous, especially to those that overvalue their skillset. They've graduated grinding, and think that after they get beat, they can just turn on that extra gear the next play--doesn't happen. People aren't light switches that turn off and on, if you're undisciplined, when it counts you jump offsides, lose your man, fall for misdirection, etc. But gotta grind every play because not only do you not know when the flash of opportunity presents, but you help make that opportunity for yourself or another. It's a mentality that requires work and repetition until it becomes intuitive and muscle memory--that's the discipline/work, but also acknowledgement (maturity and buy in). Being undisciplined results in other players doing the same trying to cya and over extending because of trust issues, which builds into a bad unit. Overall, I'd venture that this is culture, along with being at practice on time, working on the little things repeatedly, every drill, every rep, and watching film.
My mantra in life is the energy coming out is the energy going in. Works at taco stands too.