Then all opinions are worthless.
Not really the case. I attribute quite a bit of validity to the opinions of posters who have their names in green light, just as I attribute quite a bit of validity to you and bkf when it comes to talking about Carl Tacy. BabyDeac, KVegas, TITSWF, peg/tigerswood for recruiting etc. are all opinions that I privilege when it comes to getting beyond simple empirical observations (watching games in person and/or on television + reading journalistic accounts).
On-court chemistry is a pretty subjective measure, man. [Redacted]'s team has technically had it, but he's thrown out just as many lineups that haven't meshed as those that have (at least in my opinion). Jeff Teague and Ish Smith/James Johnson and Al-Farouq Aminu fostered bad on-court chemistry, but so does Chase as the SF in a three-guard lineup. You know? So does designating guys like Madison and Moto as the late game FT shooter.
Additionally, if all of the guys liking each other = chemistry, then there was chemistry before [Redacted] and during his early rosters. Your basis for these guys being buddy-buddy, then, is just AD propaganda and interviews published on Blogger So Dear, rather than any inside knowledge.
[Redacted]'s 2012 class is seven people large, so there is very little overlap between these guys and the older, departed players. Yet, I watched those older guys play a lot and didn't see Daniel or Chase having trouble getting along with Carson, Tony, and Anthony. Furthermore, CJ was close with Ari when he was on campus and has seemingly had (to any of our levels of access) good relationships with all of the "problem players" that have rolled through campus.
I think you're conflating those two formulations to suggest that guys having fun on court (plus your perspective developed by AD-produced materials and BSD content), occasionally executing, and liking each other means that they're better people (aka "culture") than the old guard. Remember, our preseason in 2010-2011, both from internal expectations and external hype, was pretty optimistic despite what would come later...
I'm not sure that's a fair characterization to our past guys, our present guys, or the coach and AD who made culture into such a big deal in the first place.
ETA: tl;dr: When you don't define a concept, it becomes very easy to fabricate a crisis of culture or chemistry, when in fact, guys are just not reacting well to a coach who clearly isn't of the "player's" variety.