This kind of reminds me of the Red Sox current "beer in the clubhouse" issue. I'd bet it was like that for years, but no one cared because they were winning. I'd even bet that Boston locals would have been proud of it if it came out during the World Series. It wasn't until all the finger pointing within between owners, management, and players after the collapse that it got any attention. I'd bet at UCLA things weren't a whole lot different, other than perhaps a single bad apple player or isolated incident, than when they were going to the final four every year.
Losing brings about great scrutiny. Something that is ok when a team is winning, suddenly becomes a symbol of everything wrong with the organization when things don't work. It could be as simple as their unheralded classes were underrated, and the new recruits were overrated. Sometimes that's all it is.