I find it funny that you seem to think a private company, that you signed all rights away to when you first logged in, has to provide some rock-solid reason for a forced name change when you obviously know the reason why someone might find it tasteless and a crude attempt at gallows humor.
Your defense of “I thought it was funny” says more about you than Blizzard thinking it crosses a line they don’t want in their game, automated or not.
But c’est la vie, enjoy your adventuring PlayerYTSHTR