It's a shame for Max that they stuck him on hards after he'd raced so well, but jesus christ does he get away with some nonsense. Ten seconds for intentionally crashing into a competitor? Ridiculously light.
He obviously went for the "ahead at the apex" rulebending* that he's used so effectively by rolling off the brakes and trying to claim the position off track on T1, and then when it doesn't go his way he's lost his head.
He's the best driver on the grid, not just in terms of speed but also consistency, track awareness and shrewd rule awareness too - but when he behaves like this it reflects poorly, the way it did when Schumacher was doing this sort of thing too. I guess that kind of anger is part of what makes a best-of-the-best racing driver though.
*It's not really rulebending, more following the letter of the law than the spirit, which is what makes a fantastic competitor -- very clever, very much maximising every inch of the track and of the rulebook.