From the article, which talks about the police being able to get a warrant on you based on nothing more than you being in the wrong place at the wrong time, and from the fact that the police convict innocent people based on flimsy evidence all the time, I'd say at this point you're much more likely to get falsely convicted based on your location than exonerated.

Has anyone ever been exonerated based on their Google location history?

As if that was admissible. Easily faked by leaving your device at home.