I know that you said you don't intend to argue with us about implementation here, and that knajjd already voiced his position briefly here, but I would like you to engage in a thought experiment with me.
If we are extremely generous and say that 20% of all members of this site have seen Zesto's photo, that still means that 80% have not. To that 80%, what is the difference between Zesto making claims of being Jpopmaxxed "Chad in the East" and befriender-of-Asian-girls-in-the-West and any other user, if there is no photo reference available to them?
There is none. It comes down to a matter of available information and more importantly, your personal perspective on that information. As an active member, you have ingested a ton of Zesto content and may have gotten even more from other sources such as private Discords and the like. You have formed an interpretation of this content based on your own perspective. However, for a poster who is either new or not very active or doesn't bother to participate in the recurring popularity contests of various identities here, seeing "LARP-brags" is no better than seeing regular brags.
In a similar vein, from the perspective of a moderator, why should we resort to our own limited perspectives of a user's persona and content when deciding how to enforce the rules? That simply wouldn't be fair. I can see how this could negatively impact people who LARP or cope with multiple personalities or have some sort of mental conditions, but catering to them based on their word in some cases but not others would open the doors for further biased decisions and a deterioration of standards for all.