>It's not clearly labeled, it is a very small label with white text on a pale blue background in an already very busy UI.
You piled a whole lot of arguments, but doesn't change the fact that it's still clearly labelled. Besides, you only need to notice this box once to be able to tell whether something marked the same way is an ad or not in the future.
You're absolutely right on the real problem: it's allowed to present itself, totally convincingly to the average / naive user, as Microsoft sanctioned.
It’s not an opinion, the law states that ads must be “clearly” labeled as such, so if you disagree and think Apple is breaking the law, feel free to report them to the FTC and see how far you get.
You piled a whole lot of arguments, but doesn't change the fact that it's still clearly labelled. Besides, you only need to notice this box once to be able to tell whether something marked the same way is an ad or not in the future.
You're absolutely right on the real problem: it's allowed to present itself, totally convincingly to the average / naive user, as Microsoft sanctioned.