The NSA is generally viewed as not operating domestically. This order shows otherwise.
They are supposed to be spying on non-Americans only. Keep in mind the US has a long-standing distrust of a porous boundary between military and law enforcement embodied in things like our 3rd Amendment, The Posse Comitatus Act, and more. These have been eroding fast unfortunately since Reagan era (and maybe even arguably since Carter signed FISA), but they are major aspects of American governance.
Who are you talking about? This order is about the FBI.
There is no other way. I think the "right to privacy" is childish.
"Big Brother" was about controlling behavior but grepping phone records is not.