I do agree that Nadal has been very negative over the last few years which has been a change. He has complained at length about the schedule, length of the season, Madrid and other issues. It doesn't seem like he used to complain about much of anything. I agree that it was a little weird that he pulled from the AO, but if illness delayed his training and if his knees are still sore it's prob the right call.
Please excuse my punctuation and grammar.