i say this as a korean person who understands everything....Psy is SUCH an underrated rapper. Everyone sees him as the caricature of Psy bc of his entire presentation but his rapping is pretty damn good
His choice of which korean words to us, his flow, his sentence structure, his choices to rap-rap vs sing-rap, and with the exception of That That his lyrics are almost all korean so it's really easy to actually follow along and his raps always tell a story. His lyrics are always SO WITTY. Kpop idol rappers (as a korean person) are kind of hard to listen to bc they're mostly nonsense and actually don't make any sense and really are just another percussion instrument
and all this without even getting into his singing which is underrated as well. He's so stable and strong which is why he's one of THE BEST live performers korea has. His concerts are A BLAST and so much fun. When I went I don't think I ever stopped singing/rapping along and dancing or sat down the entire concert