This may work for some services but there is going to be at least a few that are hard to replace and only support SMS. At least in my experience trying to find

This may work for some services but there is going to be at least a few that are hard to replace and only support SMS. At least in my experience trying to find a Canadian bank with reasonable 2FA they were all either SMS or a custom app. So I just sucked it up and stuck with my current one because there was no choice.