My image about the first wife was that she walked with a limp. There's only one place to put blame, and that's with McCain, whether or not VN was a factor. Anyone who tries to ignore the fact needs to be reminded of the key element. His first wife waited for McCain during his POW years. The divorce is all we need to know about McCain's character.
It's a big deal. Femnazis can't defend McCain without looking totally hypocritical, if this issue is primary.