The creators intended the acronym to be pronounced with a soft "g", but it does in fact stand for Graphic Interchange Format, the word "graphic" having a hard "g". Do as you will.

I've lived in and around Chicago all my life and I can say I'm not a fan of deep dish pizza either.

It's silly that he's picking on The Walking Dead, but I believe Neil Postman made a better argument in 1985 with "Amusing Ourselves to Death: Public Discourse in the Age of Show Business."