If you are implying someone must be a deep thinker to understand the words "I am a Mac," then yeah, I'm a deep thinker. So are most children.
Many children can understand what a metaphor is...as in the geek who is the "PC" represents the idea that those are the only types of people who use PC's.
Apparently your understanding of the ad is that a PC is literally a geeky human and a Mac is literally a cool human. You must have a heck of a time when you try and use a computer "joystick".