Effective ads do nothing more than inplant a message a company wishes to convey into people's brains- the more brains the merrier, and the nature of the content that most effectively implants the message hardly matters. The more brains the message reaches, the greater the sales will be. The basic message of this ad is that Apple is hip enough to get personalities people recognize to hype it, and that will drill itself into the brain of even the staunchest 'Mac hater' to some degree. It will translate to sales in thousands of people that just need that much of a 'trigger' be pulled to give them the greenlight to buy a Mac.
So when people talk about ads, over analyze them, are outraged/delighted/fixeated/horrified, or whatever by them- they merely help spread the message. The company couldn't care less if you get the core message via someone's "here look at this outrageous ad..." critique, or from watching the broadcast ad with your own eyeballs/brain.