You're obviously correct in the de jure sense, here. But there is also a matter of relationship expectation.

An unstated assumption of using any "free" product is that it's not actually free. Canonical screwed up, to be sure, but I do think many of us just expect getting harassed by salespeople to be the cost of using a "free" product.

Microsoft, on the other hand, charges me by the hour for using Azure. They've taken their pound of flesh, so my business expectation is that I'm going to be left the hell alone for anything other than billing matters. Them sharing the data in the first place, for something I've paid money for, FEELS like the bigger violation to me.