Here is the link that is in the image “T-mobile Code of Conduct” I’m not going to get in a fight with anyone over this but I think they way everyone is interpreting this is probably wrong.

https://www.t-mobile.com/support/public-files/attachments/T-Mobile%20Code%20of%20Conduct.pdf

Everything in the document reads as if it applies only to “non-consumer” messaging campaigns. Skimming it sounds like it applies to services from marketers or other or automated interactive campaigns like when people are instructed to text “music” to 242567. And people have to send “STOP” to get them off out of the chain. It appears to be a code of conduct for those kinds of interactions where T mobile would fine entities if they do not follow those guidelines designed to give their customers a expected pleasant interaction and avoid consumers labeling that activity as spam. It does not appear to be directed at individuals talking to each other over SMS or the internet. But that’s just my read.