If someone was impersonating me online, I would create a login and set the record straight with one post saying that person is not me (and in a circumstance like this, I would add “I will not be commenting further on this pending legal matter.”).
If an attorney cited that online persona, I would ensure my attorney, or at the very least my daughter’s attorney, set let the record straight in their filings.
As neither has occurred, I think we can all agree that @Inigo-montoya is a username created by Jonathan Kanarek. I’m not sure how a few, select posters can’t seem to grasp that.
As for who is currently utilizing that login, who can say? I would assume it is JK.