This does indeed get up my nose. And it's one thing saying it's normal for the Japanese players, but Japanese works differently - in Japanese, it's polite. I'm sure there are reasons but.. nonetheless it's depressing, at least when (and this is more often than not) it's flippant or.. blah.
Still there's a pretty fine line. For instance, if I'm feeling like being moderately in-character on a run I actually will address people by their discipline .. but then it'll be phrased politely and come with a 'miss' or the like so.. >.>