No problem, I said there wasnt a problem but noted that in general "Dont be a jerk" is something that I think we should be further pushing in MD, and in the past there has been instances where people have been rude related to subtitles, and it has been reverted.
It wasnt great not to at least drop IaB a message, but he was inactive for a long time, so I dont really see an issue with the change.
As for "dont be a jerk" isnt in the rules, well I think it should and it probably will be added later. The rules, quite honestly, are still a mess, even with someone "cleaning" them up, they are still pretty aweful.
See: http://meta.wikimedia.org/wiki/Don%27t_be_a_jerk