Mankind was always a bunch of horny perverts, it's just you were a blind fool before. The internet makes us better people, in part by showing moralistic fools that they are wrong about what most people do.
The contrary to that argument that I've heard is that the internet has led to an INCREASE in whack-a-doodles, for a similar reason.
In days of old, if you were a nutter who believed that the President of the US was a radical Christian-Muslim-Socialist, or that he wasn't born in this country contrary to every shred of evidence to the contrary (or any other crazy, conspiracy theory out there in general), you were often alone in your town in those beliefs. You may have held those thoughts, but usually kept them to yourself as nobody shared them with you.
But, with the advent of everyone getting a soap box, you can find like-minded folks everywhere in the world. You are no longer alone in your beliefs and you are suddenly validated. You may even find a gang of crazies in a basement (or compound) not too far from your house. Meetings on Tuesdays!
Yes, the fact that we now have this nearly instant, world-wide communication means we can see the extremes that are happening around us and shun them, whereas they were previously in the 'dark corners', but it also cuts both ways.