The dude's Jace. He's got a years-long history of schizophrenia and general weirdness/hilarity on the internet, but he's harmless. The Brianna dude is just using it for attention.
Most of the other shit Jace has done is way crazier...he paid for one of his friends to fly to Israel and live in a shack for 6 weeks because he thought Tupac was being kept as a prisoner of war by middle eastern terrorists
https://kiwifar.ms/forums/deagle-nation.23/