Two things here. I agree that Palin has leadership abilities as evidenced by her experience, but I dont believe she has as much applicable
What I think you are referring to is not people attacking Palin as not being experienced enough. They are attacking McCain for backtracking on his own message while pointing out that she appears to have no skill or interest as pertains to national issues. Not saying that nobody is attacking her for this, but I think that it started out more like, hey, I thought you said experience was so important at this moment in history, etc... My issue with Palins kind of experience is that I dont think it scales to the national level. Alaska is not like any other US state and the types of lessons someone would learn while governing that state (and remember that she hasnt governed it for long) are probably not well applied on a national level. That is all just my opinion, of course.