Well, it's possible that Turnage himself is known as a jokester and considers himself seditious (I have no idea), and not necessarily merely for using pop in classical; I get the feeling that Tim Rutherford-Johnson, the guy whose blog it is, is an uncontemptuous fellow, and he was using "get the joke" in response to someone else's somewhat more contemptuous post (possibly the other guy was contemptuous towards Turnage specifically but not necessarily towards any attempts to mix). I decided to treat Aaron's post as carelessness rather than as something uglier. But maybe my post will make Rutherford-Johnson more likely to challenge his commenters. The thread is a couple of weeks old so I doubt that anyone but Rutherford-Johnson will ever see my comment, though maybe some Googler might.