you might want to get an official ruling on that
Agreed. I am waiting to hear. If that is the case, I am going to spell something else. Which do you think is best: LOLS, LOO7, LOGO, OGLE, ELLO, LIFE …?
The other possibility is that a minifig or one of the round decorated tiles was from a licensed theme. I consciously tried to avoid breaking that rule, but I might have missed something.