I don't get the problem with vaccine passports.
You carry a drivers license to prove a. who you are and b. that you've been trained. c. you've not been disqualified.
You carry a regular passport to prove who you are.
We agree that these two are about safety, yes?
You also carry

a vaccination certificate if you want to take yourself to some country that requires it.

So.

What's the rumpus?

[Rando, shut the fuck up. I know what the rumpus is. Learn what rhetorical questions are]

Rando, I told you to shut up.
Now I have to block you.

For the cheap seats, don't tell me about relative risk of vaccination versus driving or air travel. I'm not going to discuss it.