Actually, it's not true that I don't know who's buying them--go read the five-stars on Amazon and most of the first ones that will come up are the ones devoted to complaining about Steven Wilson's remixes, or bonus stuff.
This is all irrelevant since nobody buys compilation CDs anymore, of course. But no, Ian doesn't know what year it is. When do you speculate was the last year he knew what year it was, was? 1999? He put out a "dot com" in his album title that year.