I mean, if you want to do the "No True Scotsman" thing, sure. But I think it's really counterproductive to handwave away a lot of the common problems that occur.

While it was a genuine question, I don't think the "No True Scotsman" fallacy applies at all, since that refers to subjective interpretation. IIRC, one of the objective rules of Scrum is that estimation of tasks is done by those who are to do them. If that is the case, and the owner of the backlog is estimating tasks, then it would appear that Scrum is not being practiced (or only partially being practiced, which may as well be not at all). I'm not sure how you interpreted any handwaving from a legitimate question, but I do agree with the point in general.

And I don't, because it detracts from one of the main cons against Scrum, in that it's basically a huge amplifier for crappy management, and offers absolutely no protections against it.