I’ve got a red notification dot on my system preferences icon telling me I need to enable TFA. I don’t particularly want to turn on TFA. How can I get that little red dot to go away?
Certain features in the latest versions of iOS and macOS require this extra level of security, which is designed to protect your information.
Two-factor authentication for Apple ID - Apple Support
Two-factor authentication is an extra layer of security for your Apple ID designed to ensure that you're the only person who can access your account, even if someone knows your password.
support.apple.com