Yes because heavy pages clog their crawlers. Of course they are not following their advice (neither does FB)
I mean, kudos to Google for (probably) not cheating here, but that's a low score.
And improving user experience for billions of users is not a negligible advantage either.
Maybe it is a sign that Google is ready to be taken over by a less bloated company. It is, after all, how Google came to power, by being efficient and to the point. Just look at to original Google home page compared to its competitors.