That's not the case here, though. They advertise unlimited mobile data with a 7 GB limit on data use through tethering. I'm a T-Mobile customer on this same pla

That's not the case here, though. They advertise unlimited mobile data with a 7 GB limit on data use through tethering. I'm a T-Mobile customer on this same plan, and when I signed up, T-Mobile was completely honest and explicit about what they were offering. These people are attempting to cause data that is contractually limited to get counted as part of their unlimited data. What T-Mobile is saying here is that they are going to start counting the data correctly — they're not going back on the unlimited data they promised.