KJ, a necessary element that must be proven to support a charge of forgery is an intent to defraud.

Nevada law makes fraud a criminal offense when people deliberately misrepresent themselves in order to receive benefits to which they are not legally entitled, such as money, insurance proceeds, housing or public services.

I see no "benefit" to him other than sadistic glee, and I question whether that meets the legal requirements.

Basically they won't prosecute serial bullshitters.