Mort Divine
Shrine Maiden of the In-Crowd
I'd like to say that it does certainly affect his credibility when discussing non-metal. If someone comes along saying, "I'm getting burnt out on metal, can anyone recommend me some new music?", my advice would be, "Don't listen to whatever Mort suggests."
It depends on what kind of non-metal I'd be suggesting, because I know that more than a couple of my non-metal recommendations have been things people here have enjoyed.
I know for a fact that Onder liked Jesse Sykes & The Sweet Hereafter, I know KafkaX liked First Aid Kit, pretty certain there were people who liked Cinnamon Chasers (if not here then I know on a few other metal sites people who liked them and only found out due to me introducing them), Genelec & Memphis Reigns is probably the most well received rap recommendation I make anywhere, etc.