It's not a real quote. Someone misquoted them as they were live-tweeting an event, and publications ran with it. When the audio turned up with what they actually said, those publications didn't rush to correct themselves. What they actually said:

>“With the fantasy genre on television, tonally it’s very easy [go too] campy. Every scene, you change these two lines and it’s Monty Python and the Holy Grail,” Weiss jokes. “Also, in terms of fantasy exposition, with proper nouns, it’s almost like a game of Jenga, where you’re trying to plow as many of them as possible without the whole thing falling over. In the first pilot, we had one too many and the whole thing fell over. Going forward, we tried to keep that stuff to a minimum, because we didn’t just want to appeal to a fantasy fanbase. We wanted them to love it, and we wanted our parents to love it, and people who play professional football to love it. We wanted to reach a wider audience, and to do that keeping the tone [under control] was very important.”