I've been following this discussion on MeFi; haven't gone off to read all the reviews:
It makes me think the guy doesn't know about Slice here, or feels that Slice focuses too much on the fancy kinds that he abhors. Some of the reviews are kind of fun (the "Total Bummer" category is one I wish I'd thought of when telling people about a few places) although it's clear he has a chunk of attitude with his cheese.
I was surprised that a number of the commenters also don't know about Slice. You want maps? We got maps here!