In an attempt to get this back on track somewhat, I will offer my completely uneducated thoughts.
Looking at the 2011 tyre wear analysis, what kind of caught my attention was that on the circuits with a lot of hard braking zones, such as Monaco, Valencia and Singapore, Hamilton's tyre wear was significantly higher than Button's. On the circuits with fast corners such as Australia, their tyre wear is pretty similar and in some cases Hamilton's wear is actually lower than Button's.
So I think that Hamilton's aggressive driving style only really affects the tyres on some tracks (where you really need to attack the braking zones) but for others it doesn't make much of a difference. This seems to somewhat support your theory, doesn't it?