> An attacker could easilly ask for many ambulances to random addresses, by calling from different phone numbers.
Phone numbers can be traced, and anonymous sources like a payphone are relatively rare. Getting access to more than a few phone numbers is generally going to be difficult unless they all trace to a central source (office, school, etc.) - at which point your odds of getting caught go way up.
> They can order thousands of pizzas with cash payment on delivery.
Um. Really? Is "cash on delivery" even an option where you live? I would certainly expect any sane company to get suspicious here.
There's a huge difference between exploiting a company's lack of validation VS exploiting a legally required lack of validation. The pizza company is choosing to accept cash on delivery, whereas this proposal is to force airlines. That's a huge difference and it's alarming that you don't see the relevance.
> You aren't designing an API
When you force the rule on others, I think you do owe some responsibility to think about the consequences.
> random fictitious scenario divorced from reality.
It seems ridiculous to dismiss concerns about a proposed policy by saying we have no evidence it will happen. Of course we haven't seen it happen yet: the law hasn't passed. Conversely, we have centuries of data on whether men will pretend to be transgender. Again, this is a very big difference.
I'm not against reasoning by analogy, but these are all terrible analogies.