To me, Huey is probably one of the most obvious self insert characters by a creator/author you'll see in a show or comic strip. It's done well and the creator of the show was actually cool, so it works. But Huey's views are just the views of Aaron McGruder, from the left wing politics, to the critique of mainstream culture, to the 9/11 stuff, the last of which was made plainly obvious in the final episode of season 3.

Still love the show though.