That you can determine things in multiple ways is a given. You can often infer the information of the calls. Often with decent accuracy. If you have that information, there is no need to infer it.
Take your Kroger example. You could have just stopped buying dog food from them. We completely stopped buying dog food from a store because we had trouble getting the dogs to take to the food without skin problems. Is it valid for them to assume that our dog is dead? Or just stick with the safe assumption that we aren't buying dog food from them anymore? :)
Now, I completely agree with the idea that collecting just the meta data is already pretty far reaching. I struggle to see why collecting it all is not even more far reaching.
It may be more far reaching. But the reach is gratuitous and drawing the line at the content of calls doesn't meaningfully curb the invasion of privacy.
If I stop pissing in the ocean, I'm not going to prevent rising sea levels.
Take your Kroger example. You could have just stopped buying dog food from them. We completely stopped buying dog food from a store because we had trouble getting the dogs to take to the food without skin problems. Is it valid for them to assume that our dog is dead? Or just stick with the safe assumption that we aren't buying dog food from them anymore? :)
Now, I completely agree with the idea that collecting just the meta data is already pretty far reaching. I struggle to see why collecting it all is not even more far reaching.