He's never trailing, he's never behind. Everything goes in his favour, teammates, team calls, competition, stewards rulings (as I said until recently). He's rarely had to put up a fight so why would he need to resort to dirty tactics?
These are your words. I'm not taking anything out of context here. I haven't said much to dispute what you've said just posted up what I've watched over the years and backing up what his fellow drivers say.
Cleary there is something about Hamilton that rubs you the wrong way to discredit his driving skills. Schumacher is 2nd behind Hamilton for Pole position starts. It would be disingenuous of me make the same sort of statement about him because he was often the race leader in his championship years.