Yeah, sure, but that doesn't make "those who were never born" any more meaningful to argue about than, you know, the present bald King of France or whatever.
"Logical Positivism" has been roundly debunked, but I think some of its principles, and those of the movements that came before and after it, are important and applicable. I call a lot of these "logical positivism" more by habit than by way of endorsing the philosophy as such.