Information about the text messages was provided by a service representative from Verizon, so it may or may not be correct.
I'm not doubting what the rep told you is true or not. But I'll bet you a nickel that 6 months ago if you would have asked that same rep if Verizon was sending every from and to telephone number on all calls made in the U.S. to Homeland Security / NSA, you would have been told "huh uh", "no way, we don't do that"...
You would not believe the number of things large companies tell you they can't or don't do, but they really can and do..do...