You've got it reversed because you're saying they're marketing a "damn good visual illusion" and that "everyone is giddy over it". The visual illusion (which you yourself acknowledge) is that it looks thicker (which it isn't) not the reverse.
If you had titled your post "Is it just me or does the iPad 2 look thicker than before?" - or something of that nature - nobody would be taking the p1ss.
So we're not allowed to state opinions anymore? My opinion is that it looks thicker when seen from a majority of angles (I feel like a broken record). I'm not asking you to agree with me.
About the visual illusion, there's a reason why they specifically marketed it as 33% thinner and not 4.6mm thinner. It makes it sound much more dramatic than it "visually" is (which again, it isn't really when seen from the back and sides).