"We should not let non-Christians fly planes." LOL
He doesn't come off too bad in the video you linked too although you always gotta be suspicious of Internet editing. But if he had made it more clear via his phone calls (if it is true...I don't know if it is) that bakers that don't like gay marriage have to put "I like gay marriage" on cakes but people that like gay marriage don't have to put "I don't like gay marriage" on cakes then he could have made a point.
In fact, he could have thought of ways to be more clever about it. How about this. Call a bakery and say "Will you put on a cake "Gay marriage is fine?" and have them so "Okay" and then say "Can you also add "NOTE!" to the end of it because I want people to note that I think gay marriage is fine. And then they say "Okay." And then he says, "One last thing, can you leave the E off of NOTE? Whether or not it made sense in the big picture it would get across the point of how they'll do one but not the other even though they're basically the same thing.
But that aside, on the side there were other videos by this guy and one was "Andreas Lubitz is a homsexual" (Lubitz being the pilot that purposely crashed the plane recently). I watched that one and dang, this guy is nuts. He calls Lubitz a "homosexual demon-possessed Devil worshiper." Huh? And he says, as I put in the subject line, that non-Christians shouldn't be allowed to fly planes. He doesn't come off well in that one, to put it mildly.