I would say both those reasons more then likely have a direct connection. Constant rule changes that rival F1 in terms of absolute nonsense along with at times questionable applications of penalties, stacked ontop of a schedule that is just brutal (Not as brutal as say the WWE's since they at least have motorhomes their families can come along in, but still brutal) AND all the constant PR commitments. Hell, just the buildup to Daytona 500 is weeks of PR commitments and appearances for however the hell many sponsors they have. All this while under strict guidelines that they can't do anything else as Kyle Busch has shown, first after being blocked by NASCAR from doing a test for Toyota's F1 team just to sit at a table and look at a trophy he couldn't win while the guy that won it is showered in glits, then again this year trying to set up a Indy 500 ride before being blocked by Joe Gibbs (in the same year that F1 actually allowed Alonso to miss the Monaco GP for the Indy 500). In a sense, NASCAR almost feels like Bernie-era F1 in how they are more or less trying to control what the drivers in their series do while competing and I would imagine that after years of such a restrictive and repetitive pattern, its reached a boiling point for some.
Finally doing the right thing. K&N series uses composite bodies do they not?
Well...that's a stunner.
