Eight, let's not try to twist words here. Apple is great at marketing but I don't think that was person's intended meaning. He means that Apple is good at manipulating people.
They make okay products (in absolute terms, not implying that anything is better) and would not have their completely rabid following did they not manipulate people into buying into their status, lifestyle, and that they're more valuable than their worth.
Marketing is the process of figuring out who a product is for and how to get them to want to buy it (through channels like engineering, design, and yes, advertising). Apple being an excellent marketing company isn't a slur — it's an incredible complement. They absolutely excel at understanding who their target audience is, building devices that appeal to that audience, and advertising to ensure that audience is aware of how those devices address needs they may not have even known they had.