*Facebook ads are different than Google ads (or other web site ads) because you go to Facebook to interact with friends while you go to the rest of the web to find information.
This is a false argument. If I interact with friends I talk about stuff I am interested about. There you have your connection with ad. Even just mentioning someone's look or hair color could immediately trigger an ad for something related to it and commercially interesting.
Well it isn't a "false" argument it's an argument you disagree with. But your circumstantial evidence (that you click on ads) is no more or less compelling than his circumstantial evidence ("that he doesn't"). The question boils down to which of you more accurately represents the public at large.
This is a false argument. If I interact with friends I talk about stuff I am interested about. There you have your connection with ad. Even just mentioning someone's look or hair color could immediately trigger an ad for something related to it and commercially interesting.