Is it unfair to totally blame Kirk Cameron for GP's downfall?

Don't get me wrong, I think Kirk Cameron was (and still is) a colossal jerk and egomaniac (who pretty much acted like his doo-doo didn't stink) once he had his big "awakening". The way that he treated Julie McCullough was extremely petty and out of line.

With that being said, there were many other factors that were perhaps working against Growing Pains namely:
*Tracey Gold's anorexia.

*Jeremy Miller hitting puberty and simply no longer being a charmingly cute kid (instead being an awkward, gawky, lumbering dweeb w/ a goofy haircut).

*The departure of Mike's sidekick Boner, which forced Mike (even w/o Kirk Cameron's "awakening") to "grow up" a little.

*The acceleration of Chrissy's age, who in return, became extremely annoying once Ashley Johnson took on the role

*The simple fact that the kids (or at least, Mike and Carol), by the time that Growing Pains went off the air were getting to the age in which they were adults and therefore, could take care of themselves.

*Family sitcoms like Growing Pains arguably not "working anymore" (e.g. shows in which both parents are successful professionals) in the face of edgier more blue collar family shows like Roseanne, Married...with Children, and The Simpsons.