The problem that I have with Authenticator Apps, is that they are a usability pain... In order to get the code, I need to abandon my current context, open the app, copy the code, go back and then paste the code.

With an SMS I just need to wait a couple of seconds and the notification comes up. I don't have to abandon the app or switch context.

That's why I always choose SMS over the other 2FA options. It could be less secure but in the bigger context is still adding a second layer of authentication and is far more convenient than using the authenticator apps.