Reality may be a bit more complex. - You may not have all your source code repos synced locally. Maybe you think you do but forgot one. - You may keep your ph

Reality may be a bit more complex. - You may not have all your source code repos synced locally. Maybe you think you do but forgot one. - You may keep your phone in your computer bag and lose both at once (both your 2fa and your code). - You may drop your phone in the ground and fail to get access to your password manager. .. etc. Having a backup strategy which involves you not breaking a piece of glass (aka phone) you play with while sitting on the toilet is a bit risky.