Sure it's a bit edgy at times, but you seem to completely ignore the the social commentary that is also present, and is arguably a goal of equal standing with their comedic. The offensiveness is just the tool.
Do you differentiate between majorities and minorities, and think it's ok or not as bad to poke fun at a majority person? When the first white man set his feet on Australian soil and called the very majority black people - animals, was it not as bad as if that was said right now?
It's a topic maybe relevant in this thread and others, because I'm not sure that people dedicated to equality really always know what actual equality looks like. For example, plenty of people were up in arms about the way that Julia Gillard was treated when Prime Minister, suggesting it was sexist. But if the opposition didn't use anything they could to rip into her, then that would be sexist. Let's say we've got a sports team with a gay player not "out" and another player having an affair with Angelina Jolie. Now if both of those situations in the hands of the media would be equally disruptive to the team, equality is both of them having to keep it to themselves.
Equality towards populations vs individuals can be quite a different thing.
