I am not the best forum spelunker so, I have had no success in finding the quote, but I know I saw it because I remember being surprised by their stance.
I continue to hem and haw about whether I agree or not...
On the one hand, it clearly puts that ACCOUNT at an advantage, giving them access to more resources simply based on an exploit of time.
On the other hand, that account is NOT illegally gaining those resources, they are utilizing man power and giving up time to do so, I could just as easily ask my mother, a night owl who loves Bejeweled to play all night so I could wake up to many more resources... but I don't. And whether I feel this way or not, it's not ACTUALLY a matter of right or wrong, but Personal Preference. I prefer to earn my goodies on my own. Period.
So, as I said, I go back and forth on how I feel about account sharing, but I know for a fact I don't like CHEATING! And so long as the shared account is NOT botting and/or exploiting the game code itself, I understand the devs reluctance to call THAT cheating.