I was in Naval Aviation during this time. As I recall the AF totally would not buy another NavAir design. Pure politics; it's still going on, as far as I can tell.
We have squandered tens of billions of dollars on inter-service politics and the F-35 might represent the pinnacle of such folly. Having a Marine version was a major mistake in that it heavily influenced the design of 95% of the other aircraft.
With that said, and I have certainly been critical, the jury will be out on the F-35 for a long time and it could end up being as good as some of the other aircraft initially thought to be dogs. I pray it is - we cannot afford to get it wrong.