How do I permanently disable two factor authentication?

Please read Two-factor authentication for Apple ID - Apple Support.

Excerpt:

Can I turn off two-factor authentication after I’ve turned it on?

If you already use two-factor authentication, you can no longer turn it off.

I surmise the reason is that no one has come up with anything better. Pretty much every place has forced it upon us already, or soon will.

It's all "for your protection" (yes I know that's a crock). Blame all the people who routinely succumb to phishing scams. Some popup demands their Apple ID and password, and they say "oh ok, here you go." This particular Discussions area is littered with them.

Here's one from a few minutes ago, and they're one of the 0.01% who actually did the right thing and questioned it.

Apple does a pretty good job with their Support document, under the heading "These signs can help you identify phishing scams". It used to include pictures.

Of course the people who need to read it, don't. They're easy prey for scam artists all over the world. If just one of a hundred thousand emails harvests authentic credentials, it's profitable.

For your entertainment: https://www.opendns.com/phishing-quiz/

It took me a few moments to find a "phishing scam quiz" that was not in itself a phishing scam! That one is OK though.

I don't like it either JeraOdin. No one likes it.