I thought the TSA technically required the phrase "I opt out"?
After the sneaky New Year's Eve signing of the NDAA, I suppose it did just get a little bit more dangerous to opt out, so maybe the screener was informed and somewhat helpful. Kind of like points on your license now, too many red flags and you get disappeared.
Not that that would keep me from opting out.
Not that I'm even more inclined to stop boycotting flying in TSA airspace.