In this case, it apparently wasn't an answer, though. It was a box saying "popular on Twitter". That's not much of an endorsement.

It's a cliché to say that people should think more critically. In this case it's just a matter of knowing what "popular on Twitter" means when it comes to breaking news. It's not really about whether you trust Google and more about knowing that Twitter rumors are often inaccurate, however you run across them.