Rav Nahman in fact said something similar. There was a rav in some city in which there were a few followers of Rav Nahman. His disciples wanted to know the accurate law about different points. he said to ask that Rav and then do the excat opposite of whatever he says.
This just goes to show how far the religious world is from Torah.
However I should add that there are some aspects of the religious world that I think are great--for example the straight Litvak yeshivas [Lithuanian]. I also think that Rav Nahman is a great souce of amzing advice.
However I admit I did not manage very well in the frum world at all. But I attribute that to the fact that the Sitra Achra has penetrated the religious world. So that there is really no where to go that is clean or pure.