The problem is that twitter forces you to add a phone number, and once that phone number is added it will automatically be able for 2FA. If you don’t believe me

The problem is that twitter forces you to add a phone number, and once that phone number is added it will automatically be able for 2FA. If you don’t believe me then remove your phone number and wait. Eventually you’ll login and get a message saying your account is suspicious and you need to add a number.