The big takeaway is that all the US-based carriers except for T-Mobile are crooks.
As if you need another reason to drop AT&T or Verizon. Not only do they rip you off, lock you in horrible contracts, sell you locked phones, etc. They also invade your privacy and track all the internet browsing you do through their network.
Spoiler: AT&T and Verizon are shameless crooks.