If you had ever put the time and effort (and blood!) into learning how to play the guitar, you too would have a visceral reaction to seeing a guitar getting destroyed for nothing. It's not the objects themselves that are the problem, it is our connection to those objects, and our innate feelings about those objects, that Apple has smashed in that video. That's a marketing 101 mistake and how this ad ever got greenlit is beyond me.
If it weren't offensive to someone, somewhere, they wouldn't do it.
Apple, on the other hand, will never be punk. They left that path when they realized it was more profitable to become the guy on the screen in their earlier ad.