This may be true, but does it really matter? AMD made the decision to sell of their fabs and now are dependent on someone else. Bottom line is what the performance of the final product is. In a sense it is irrelevant who is at fault.
I look at it like this. GloFo's 32nm/28nm situation can only be better than whatever it would have been had AMD held onto the fabs.
GloFo, to their credit, are not going down without trying. They are throwing gobs of money at it.
It just goes to show that doing this stuff is really hard, it is rocket science and there are no shortcuts to be taken.
And likewise with AMD, I can't possibly imagine a superior path for them to have taken than the one they took in which they acquired ATI and then spun off their fabs while maintaining contracts with them in good faith.
It was the cleanest and most tractable method of separating the two businesses.
The only way AMD could have done anything different is if someone had come along and simply gifted them $10B circa 2002. Barring that, they've made the best of a very untenable economic reality.