I agree, but it's interesting that Google is doing so much more than just search today and they're not inviting the same response. Is it because the main search service has stayed the same without suffering from feature bloat?
Facebook on the other hand is monolithic, and that gives it a much greater appearance of omnipresent intrusiveness.
Google makes lots of products that you can use however you please. Facebook makes one product, and when you want to use one aspect of it, you get lots of baggage that you don't necessarily care about.
Google's tools seem more about facilitating accomplishing something else as fast as possible, while facebook is the ends in and of itself. How long you spend on facebook is the metric of how well facebook is doing.
At least thats my take on it.