It was. Was he involved more than the average player? Absolutely. Was he at the Lavar Ball end of the spectrum? Not even close.
Bronco failed at evaluating Porter, he literally passed on him. Porter blew up and by then the Gustin family were understandably offended that their own church school in their backyard turned their nose up at him. By this time the damage had been done so Bronco and his minions created and perpetuated the narrative of Porter having "character issues".
Nevermind Bronco offered and stood by Charles West among other players with "character issues".