The implication being that in a depraved society, all things are permissible except non-permission of things. People are free to engage in whatever hedonistic they choose and the only people who are persecuted are those who don't accept it.
The statement was used to indicate the state of our own society, that those preaching tolerance (on subjects like gay marriage) simply wish for our society to be as depraved as possible, so that they can do whatever heinous acts they choose without fear of repercussion.
I see this as spiteful vitriol, an attempt at creating a slippery-slope argument, but what do you think? Is our society depraved? Are those who preach tolerance simply doing so for their own ulterior motives?
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Indeed, the Greeks, with their myriad gods and wisdom filled teachings. Small wonder that they've elevated themselves to the great empire that they've become.