M79 was never any different than a hundred other crappy blends until someone, in the early years of interweb pipechat, said that it was the most vile stuff ever. The anonymous someone (who I'm sure at that point was held in very high esteem because he posted something "Haddos in a Dunny" related) could never have known that his simple post would be one of the most oft repeated bits of relative nonsense that the pipeinternet ever saw.
Just think about how many people, over the last twenty five or so years of interweb scholarship, have deemed M79 the worst thing ever without ever packing a bowl of the stuff.