Privacy glasses maybe? Though you might have some far more serious issues with airport safety if you wear them.
Privacy is a human right. We should punish the offenders, not the subjects.
Seriously though, you could fight tooth and nail to have your privacy protected (GDPR lawsuit, whatnot) but it's time consuming, and surely you have better to do.
You could also ask why you pay for locks on your doors, when the things you buy are yours; why you have to pay for a parking spot; etc.
I paid for my lock, but I did not fortify my home. That would be unreasonable, because the society I live in discourages theft, codified it in some rules and actively enforces them, to discourage the unwanted behaviors. And yes, I pay for this through my taxes. I believe I get value for money.
In a similar fashion I expect privacy intrusion to be frowned upon and policed. Surely I have better to do than filing GDPR lawsuits -- or searching for the latest privacy glasses. But I don't want to spend my time searching for such gadgets just because someone on the Internet thinks they're fine.
I don't want the privacy glasses in the very same way I don't want a fortress for a home. I hope you understand.