Nah, fair play to him. It probably should have been logical of Hamilton not to do that, as it's quite a low blow - regardless of how he even gave a hat to Vettel. Just throwing a hat mindlessly like that shows arrogance.
I feel Drivers Championships that are won with massive points differences seem... rather hollow. The last season that I really enjoyed was 2012. The championship going down to the wire in Interlagos. Not to mention the 7 different winners at the start of the season. I loved 2012. Although I believe that domination by one team isn't good for the sport, I have to applaud Mercedes for what they've done over the last two seasons.