The examples to counter this are beyond just television.. people don't goto airports to get advertised with IBM or barracuda advertising.
People don't goto football games to watch the Goodyear blimp.
People never ask to be advertised to but..,
Where people go in mass, advertisers want to reach them.
There is no place people go consistently more than Facebook and they have the best mechanism for targeting so many niche sets of users.
And to argue facebook isn't culturally relevant vs TV. I'm a little bit lost with that one. Memes and videos everyone must watch are a cultural phenomenon heavily driven by Facebook.
The fact that Facebook advertising targets you so well (or not) is something that is a common conversation just like talking about the annoying (or not) commercials that exist on TV.
People don't watch television to watch commercials.
People don't drive on the freeway to see billboards.
This argument that advertising must be like google "advertise people looking for things" is not the value Facebook is offering advertisers. It's offering something significantly different and in many ways bigger. "Advertise people when not looking for things"