Bronco et al. may have come across as less friendly to the media and they may have been less 'buddy/buddy' with the players than the current group--but that doesn't mean that they didn't teach and train. Think about all the players that love Bronco and would run through a brick wall for him.
I get it...we're in the honeymoon period and sometimes people feel the need to prop the current regime up by taking pot shots at the predecessor.