I love Buck, but also know that he has never had a positive opinion of Bronco. He's just reiterating the same narrative he's been proffering since the beginning of the Bronco era.
However, except I think he's throwing out statements that are either unfounded or are untrue. It may be that 90% of the former players that Buck still associates with don't like Bronco (which could be as few as a dozen or so), but that would hardly be even close to representing a real 90% total--even a 90% total of those who played for Lavell.
In short, Buck is simply pushing a narrative--his. His assertions ring hollow in the absence of significant supporting evidence. Still, he's one of my favorites though. He's welcome to his opinion of Bronco; doesn't make it fact though.