They can think of it, sure. But when you read their testimonies, and read the summaries of leaked documents, you can see they are attempting to be law abiding e

They can think of it, sure. But when you read their testimonies, and read the summaries of leaked documents, you can see they are attempting to be law abiding even if they _really_ stretch to interpret the law. Just because they know its a way to thwart their system doesn't mean they have another "legal" way to collect the same data.