I believe you and find that interesting but it seems to me you're talking about your education, not pg's. Those terms aren't universal and, as I'm sure you know, there's also a strain in analytical philosophy that takes pride in not knowing anything about that stuff. Besides that, skepticism about postmodernism generally was as widespread then as it is now, especially among technical people, and I'd be shocked if that hasn't always been his view. Certainly it was 10 or 15 years ago, whenever it was that I first read him refer to it.