You are half right. It obviously did not create the pigs, but the "trough" is the place for easy pickings: Crypto. Of course Crypto did not create scammers, scammers simply have an easy time scamming people there.
Agreed 100%, but troughs are good for other things besides feeding pigs. I hope the actually innovative, non-scam projects don't have their name tarnished too much by all the pigs.