It can still be opt out with a fallback on the old approach of security questions. The name of your first pet, your favorite teacher, etc.
It doesn't matter how much in general 2FA works out better for most people, there are lots of people for whom it is not viable. They know who they are. Give them an option that doesn't make their life worse.
It doesn't matter how much in general 2FA works out better for most people, there are lots of people for whom it is not viable. They know who they are. Give them an option that doesn't make their life worse.