It is swings and roundabouts. The year before Federer was lacking conditioning because of Mono a few months earlier. But Nadal was a competitor at the 2009 Roland Garros - so it isn't Federer's fault that Nadal wasn't in top shape. It is also worth remembering that Federer beat Nadal in straight sets on clay in Madrid just before Roland Garros 2009. Federer definitely deserved Roland Garros 2009.
Mononucleosis is a serious illness, potentially lethal or debilitating. The fact that Peder used it as a fake excuse speaks volumes about his lack of character or sensibility. It would have been more sensible to just wear an undershirt and declare a bad back (as he learned to do later on).
True, Nadal took 2009 off, as I recall, and you are probably right about the loss in Madrid to Peder. I don’t remember all the history there, but I think he may have also lost to the Hawaii 5.0 and dropped a set to the Shirtless 4.5 Pusher that season.
Hey, if you want to ignore the big Pink Elephant of an asterisk waltzing around, it’s a free country.