He did what was expected from him and it won him the race.
Plain and simple.
Actually the fact that he got a penalty for that (imho a very light one) means that he was
not doing it right/correct. Plain and simple.
So no, you're not right. There are rules there and Lewis broke them. If he would have been driving - albeit aggressively, which is normal -
within the rules, nobody would have been complaining.
Luckily Max seems to be fine...
Hamilton has always been ruthless and respectless in the title fight, but after Rosberg he had no opponent left to challenge him. For me it was a racing accident but he deserved a 10 second stop and go penalty.
Look at the photo series with Rosberg in the past, he reacted recklessly most of the time, it was the same with Michael Schumacher in the past, he also "intentionally" shot down Damon Hill.