The difference is the subject. It's not academic or philosophical. Go watch the videos linked in other comments to understand the intrusive nature.

I get it, the counter argument is that the stationary camera is no less intrusive. To which I counter that the stationary camera records my happenstance gross actions along with those actions of many others, I am literally lost in the noise. But the explicit camera on me records much finer detail of myself, and nobody else, there is no noise to be lost in.

Perhaps people who like attention do not see a problem being the center of attention. I personally don't mind if someone notices my presence but I do mind if they think that seeing me means that I can become the star of their next production.