Already lost no reason not to fight.
Back a couple years back, lower-fare-cards consisted of a bit of laminated paper (a bit wider but less high than a credit card) with a photograph plus a bit of paper proving you'd paid this year. Then they changed it to a yearly issue of a credit card-sized card... without photograph. Apparently matching the hundreds of thousands of holders to their card by face just wasn't important to them?
Some half a decade later they'd "upgraded" again to the same card but now with photograph and also the RFID chip that's supposed to replace all PT fare cards in all of the Netherlands; oyster card like, but so broken they're "naturally" having to keep ever bigger databases for ever longer to datamine for fraud. Instead of, say, upgrading the chip like the oystercard chip was. There's much more blatant nationwide incompetence where that came from, but I digress.
The point is, apparently photographs aren't all that important. So what are they taken for then, anyway? My complaint is probably that nobody in charge is thinking about issues like that other than "how do we sell ever more privacy intrusion to the public, and making them like it too?" and nobody really has a clear idea of what's necessary and what can be done without.
Another tech note: Matching passengers to plane seats isn't really what airport security is for. If people want to randomly swap, why, well, why not? Much like how in the US you could board internal flights without a passport at all right up until a concerted effort to fly planes into buildings succeeded. The mere fact that the latter hasn't happened again is no proof that changing the former --or any of the other knee-jerk measures-- has had any preventive effect.
What airport security ought to be doing is to look for bad apples, not as a result of long lists of named badness, but to look for nervousness and possible bad intentions. That's what the Israelis do very well; the bag scanning and all the rest is more of a side show for them. It's also something that a competent and experienced border guard can be very good at. You wouldn't know it for we've seen very few of those in the last decade.
Grasping that it's about humans, not about technology, the rest of the world mostly fails to. That is including INTERPOL, and the US most of all because ignoring that people are human lets them play with more and newer electronic toys. At the cheap, cheap price of treating travelers inhumanely, even if only for a few minutes for most of us.
It really isn't the privacy alone, though that's an important symptom. It's that travelers being treated badly is supposed to convince everyone that the security is not so obviously completely fake.