Google Authenticator used to be disconnected from reality like this. Users were asking how to copy the codes to another phone, and they said "you can't, WAI, should add the other phone as a second auth method on every site." Like how people say you shouldn't copy SSH privkeys. I figured out an undocumented way to do it on iPhone by taking an encrypted iTunes backup though.

Eventually they yielded on this, but their later updates had other usability traps. Because Google Auth was the household name for TOTP apps, this maybe ruined TOTP's reputation early-on.