Discipline is the practice of refusing to do things that are bad for you. Integrity is the practice of refusing to do things that are bad for everyone. Seth McFarlane is a man devoid of discipline and integrity. He's also a shallow fuckhead with a shitty sense of humor.
I don't know if I can argue the man's discipline or integrity, one way or the other. I'm more than comfortable arguing that his name holds more weight than it should. I'd also say that I don't think we're his target audience (you're better read and more intellectual in your choice of entertainment and I enjoy really pulpy and/or straightforward stuff with a lot of heart). That said, especially compared to a lot of stuff that I watch, I would agree that for the most part his sense of humor is a bit too much on the blunt/vulgar side. I'd say the same for The Simpsons after it got old, South Park, Angie Tribecca, It's Always Sunny in Philadelphia, Difficult People, so many of the stand up comedians out there. I could go on forever. I think the line between good absurdism and bad absurdism is so fine, and good potty humor and bad potty humor is so fine yet still so distinct, that creators often can't tell when they've crossed it, but audiences can easily discern it by intuition.