There seems to be no way to get in touch with Amazon about it, so I'm asking here. Anyone else in the same situation?
BTW, Don't tell me just accept it. If you do, you don't get what I'm talking about. I can't get a phone number of who the f** I'd have to talk to there to permanently exempt my account from this req. I've been moving stuff there for 10 years and I'm managing $100k /yr through them at least. Moving verification to an authenticator app or key is MUCH less secure for my living situation.
I accept that this might be true for your situation today (though I doubt that: apart from someone potentially hacking your mail server, they could also hack into your domain registrar or DNS provider, and MFA would protect you from that, even if you'd have other, bigger problems due to losing your mail), nothing stops you from keeping the security level high (eg. use a long passphrase for your MFA device instead of a simple pin; if it's a phone, encrypt it too...).
I am guessing what you mean is that it would be a lot more inconvenient but not much more secure: it helps to be honest with oneself if you want useful advice.
Otherwise, the only thing you are signing up for is people telling you how you can make it more secure (like I did :)).
So, which is it?
It's a hassle for you, but Amazon isn't going to go out of their way for you. $100k is chump change to them...
Now, I would strongly advise against this (and I am deliberately low on details), but if you know what you are doing, nothing can stop you.