As far as I can tell this question wasn't a migration, it wasn't problematic, and it isn't an autodelete based on negative feedback (it even had an accepted answer). Why was it deleted by Community?
Did the user delete their account? There appears to be no account associated with that username, but as far as I know, after you post you can only get your account deleted by contacting support, which seems to have happened extremely quickly (since the question was posted less than an hour ago), so I suspect it's not that.