I've been to Melbourne. The only thing I can think of is that people there don't have much experience in the art of complaining. In other places people have many things to complain about and they learn at an early age. But, people in Melbourne may go through their entire lives with maybe only one or two things to complain about. Complaining, it's new stuff for them and they just don't have it down just yet.
Apart from the J turns and that there doesn't seem to be a distributor of Pepto Bismo, I can't think of anything in Melbourne to complain about. And I can't complain about the J turns because I don't quite understand them enough to make a proper complaint. So I'll just let it slide.