T-Mobile MAKES IT CLEAR when they marketed binge on. This isn't a tough concept to grasp so you re either being disingenuous or lying. One or the other.
As a TMobile customer, it ACTUALLY ISN'T CLEAR that Binge On lowers the quality of non-apporved video sources. I, as a general consumer that has read articles and seen the ads, believe that if I watch a video from any of the "approved" video sources, it will be at a lower res and not count towards my data. I have not seen, anywhere, that with Binge On enabled, that ALL VIDEO sources will be downgraded.
Is it in the fine print? Could be. Has it been made CLEAR through advertisements? Not at all.
(I'm assuming that it actually does downgrade all video to 480p, not just partner sources).