If we have something better, we can provide it together with Google Authenticator, and let users freedom to make their choices. Better a platform and have its academy with articles to educate their users about basics of the platform, security and more. If a platform has an educational academy like this, I see it is a plus of the platform to attract new users. People will have a platform, products to use and they will also find available educational resources for learning, I am sure many people will like it.
Like now, with 2FA, you have some options, SMS code (of course it is not good and isn't recommended), or 2FA applications.