The question here isn't (primarily at least) whether this is a good or bad thing, the important question is if this arrangement is legal under EU law. It can be the most beneficial thing in the world and still be illegal.
That's very true. I think my comment was more in response to other comments talking about "surveillance" and "trust", but you're right that if the data collection itself is illegal, there are no two sides about it :)
The question here isn't (primarily at least) whether this is a good or bad thing, the important question is if this arrangement is legal under EU law. It can be the most beneficial thing in the world and still be illegal.