My theory on this and that is all it is:anyone who questions the tipping policy would prefer not to tip. Average service deserves the tips as set up. Most lines have gone with the auto tipping. Rumors are this has to do with too many who prefer to stiff the crew. Because the $10 per day is so little most of those I have spoken with leave extra to those who go above and beyond.
Is it a way of not paying the crew a livable wage? Get real of course it is, but ask any crew member would they rather have a larger salary or tips, a hard worker (most are) prefer the tips. I am a little tired of this subject being discussed daily.