People do the same on other platforms. I've been impersonated on a social media platform via a two letter swap.
I don't think it needs a solution, administrators of instances have to solve this, first by asking to offending instance to ban the user, mute the user and if the instance doesn't do anything about repeated abuse, mute the instance.
I don't think it needs a solution, administrators of instances have to solve this, first by asking to offending instance to ban the user, mute the user and if the instance doesn't do anything about repeated abuse, mute the instance.