Pleasure is the good toward which all our actions point, but that doesn't mean *every* pleasure is desirable or choiceworthy.
We are totally in agreement as to this result, but I do sense that the way the point is made is very important and can be confusing if the phrasing is unclear enough to imply in some way that pleasure is not pleasure, and that is where I think "empty" is uncomfortably close to implying that the pleasure is not in fact a pleasure, but only a "shell" of pleasure without any substance. Pleasure in fact presumably has no substance other than pleasure itself.