I think he is ILE. He reminds me of almost every ILE male I know. And the writing style is really lighthearted alpha Fe-esque. At least it was when he first created the show. Earlier episodes it was more like this... in later years it got a lot more politically correct and professional and Te-ish/less personable but the original concept of The Simpsons in earlier seasons was a lot more Fe than Te. Also just one of my weird theories but it being more Te lately might also have a little something to do with the actress who plays Lisa Simpson (Yeardley Smith), who is very ESI-ish. Probably not just her though, I'm not sure how much influence she really has but it seems like a greater influx of Te valuers and Te valuing actors over took it into something more Te than the original creators had intended.
Is is still on the air? Yes... 32 seasons wow.