Just to be clear, I write this thread with no intention of questioning anyone's attainment. That is why specific references are left out for the time being (although they will probably eventually be brought up here and there).
Having attained enlightenment, how would that be reflected in one's constitution?
There are accounts of arahants being rude and otherwise impersonable. These range from the time of the Buddha through to modern times. Wouldn't one with such an attainment have gradually shed certain traits such as impatience, rudeness, etc? What about foul language?
It could be argued that certain attitudes are expressed as a skillful means of teaching a lesson as well, so that might reconcile certain instances of rudeness and the like.
And what to make of smoking?