Don't worry. All these tennis pundits have already gone through the whole path, and now they are travelling in circles:
2005
Nadal is a one-slam wonder, he'll never win a slam again, and retire by 2008
2006
Nadal is incapable of playing anywhere outside clay. His Wimbledon final was a joke.
2007
Nadal will never win Wimbledon, and retire by the age of 25.
2008
Nadal will never win anything outside natural surfaces.
2009
Nadal will never win USO. Nadal is over and done with, he'll drop out of the Top 10, cripple his legs and retire next year.
2010
a very bad year for haters, they were mildly grumbling something incoherent.
2011
Nadal got infected with Djokovic, he'll never recover No.1, he'll never win a slam, buy himself a wheelchair decorated with Swarowsky crystalls, and die of starvation.
If next year Nadal turns Djerkovic into minced meat, and he has a nice habit of squaring accounts, you can revive this thread and rub it in. Haters will disappear for a couple of weeks, then come back and proceed with their prophesies.