If it is ok to second a POTM then it should also be possible to post a disagreement. The discussion should NOT discuss the merits of the content of the post but the quality of the post.
Thus saying that I nominated a post because (in part) it was being "nice" but that, in the opinion of someone else, it was not nice seems to me to be valid here. It is, of course, not easy to avoid arguing the contents of the post as well but I think that was avoided.
Others could argue with NSBF's nomination too if they disagree with my asseseement but NOT just because they disagree with what NSBF had to say (which I do myself, totally).
™ Version 4.2