Well yes that last comment goes to the heart of the issue -- the word "empty" in English at least to me is indicating that it is not in actuality what it represents itself to be, and that is not my understanding of what Epicurus is saying as to pleasure. No pleasure, no matter how much pain the choice may later bring, is devoid of pleasure, and that would be what I would infer from use of the term "empty." Yes a particular pleasure may be unchoiceworthy in that it brings excessive pain in a myriad of ways, and that kind of analysis is core Epicurean thought, but a pleasure would NOT be labeled "empty" because the pleasure does not bring pleasure, because if that choice or action were not pleasurable then it would not be pleasure.
If the meaning to be conveyed is "don't choose it because it doesn't bring net pleasure" or anything that means something similar, then I am all ok. But that is not what the word "empty" conveys to me ,or to what I would wager would be a large number of people in common understanding. That's why I recoil from it.