Consent can be tricky when you create a path of higher and lower resistance. This is especially so for people who try to avoid conflict (teenage girls here especially). They may give consent simply because it's what is expected of them, and rather than what they actually want. UI design for such consent forms has to be carefully considered so as to make it 'socially acceptable' to decline.

That specific popup is a clear example of how to maximize acceptance in a big portion of the population. I can almost guarantee you that popup design was chosen based off A-B testing, and had the highest rate of acceptance among designs.