Unless I am mistaken, when the instance you sign up with dies, so does your account? Obviously your content and potentially profile will exist in some state, but you would no longer be able to authenticate, so for all intents and purposes your account is gone.
While that won’t matter for some, for others that means there is some importance in the decision of where you create your account. Since, once that instance decides to shut down (or if it happens to defederate,) your account goes with it.
Unless I am mistaken, when the instance you sign up with dies, so does your account? Obviously your content and potentially profile will exist in some state, but you would no longer be able to authenticate, so for all intents and purposes your account is gone.
While that won’t matter for some, for others that means there is some importance in the decision of where you create your account. Since, once that instance decides to shut down (or if it happens to defederate,) your account goes with it.