[inopinatus]

To some extent I think this is a user category error. Similarly, one of my platform's most frequent support requests is account recovery due to a change of employment. The number of people who use their work email for personal accounts, without thinking about the long-term consequences, is staggering.

Protip, don't name anything expecting you can change it later. See also: S3 buckets.

[kolemcrae]

Or, you know, let us unlink accounts or change the username, two pretty normal and reasonable things to request.

[inopinatus]

There's nothing that makes either reasonable, other than "I demand it".