Exactly. This is a giant nothingburger. You can't get through a gate at the airport without showing government-issued ID, by which point they know exactly who you are, and every detail about your life. What exactly are you opting out of? You're still being recorded by dozens--if not hundreds--of TSA/airport security cameras every step of the way, and even if there isn't software automatically identifying and tagging you, it would be trivial to determine who you are. You're on camera when you arrive at the airport, you're on camera when you check in, you're on camera when you go through security, walk to the gate, and board the plane. It's unlikely a single second of your activity in the airport is off-camera (bathrooms notwithstanding).
I don't like the surveillance state, in particular the ubiquity of cameras in public open spaces where there's no compelling reason. I don't like the networks of private cameras people have attached to their front doors, all fed to Amazon and Google (and the state, most likely). If we're going to have cameras anywhere, though, the airport is the place I have the least problem with.
We're way past opting out, whatever that even means in this scenario.