I don't think it i s the same thing. I don't like pervasive tracking either, but it is very different from for police to subpoena google to get my data, than it is for flock to directly give law enforcement my location.
I use Find My friends on my iphone, I trust them enough they can know my location and I trust Apple enough to carry that data (I realize this is implying "nothing to hide", but I also consent to giving Apple my location). I get that it seem creepy, but its also a cool new technology if you can get over how creepy it seems. Not trying to sell you one, but give you another perspective.
I'm not a parent, but when I was teen my parents monitored me as much as they could. Personally, I think location tracking is less of an issue than parental surveillance of internet browsing. I do think if parents are going to track their kid's location, they should let their kid track the parents, too.