It's probably more of a statement about our jargon: most OB veterans are probably on board with the concept that "morality" should be used to generally talk about our goal systems and decision processes, and not as if it implied naive moral realism.

I'd suspect that some of the 14 are relative newcomers who thought that the question was asking whether they accepted some form of moral realism or not. I'd also expect that some of them are veterans who simply disagreed that the term "morality" should be extended in the above fashion.