For example, I can change my username here on this instance. So long as my email id remains the same, my account is operable.

But GitHub doesn't allow me to change my username. On top of that, GitHub forces an identifier on you when you create your username.

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[–] 6 points 5 months ago (5 children)

For example, I can change my username here on this instance.

Wrong, you can change your display name, but your username must remain the same. If your username is changed by an admin it brakes federation for your account and your posts and comments will only be visible on your local instance.

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  • [–] [S] 1 point 5 months ago (4 children)

    So what you see is my username or my display name ?

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  • [–] 1 point 5 months ago (3 children)

    The app I use shows your user name, but if I go to your profile I see both.

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