How do you know that their (Xfinity) JavaScript code counts against your data cap?
It didn't need the theatrics and intentionally misleading garnishments (like quoting Comcast's own RFC that's describing their own recommended behavior for themselves, then pointing out you can phish people, and then awkwardly trying to glue those tangential points together)
The bad behavior is bad enough that it'd stand on it's own, and if it instead focused on things like accessibility up front, it'd be much stronger of an article (and people would be more likely to read it all the way through)