
Hitmonchan is tragic, and I wouldn't be shocked if the physical-special split happened because of its miserable existence. Amazing, incredible concept that could well have made it a top tier in RBY, thoroughly neutered by a horrific statline that would make even Beedrill recoil in fear.
The elemental punches, coming off Hitmonchan's awful Special, do literally nothing. The only one I'd argue is usable on Hitmonchan is Ice Punch, solely for potential 4x effectiveness on like, I dunno, Dragonite? And maybe you'll freeze something sometimes..? I dunno man, Hitmonchan sucks.
Why doesn't Hitmonchan get a signature move while Hitmonlee does, by the way? Like, damn, Hitmonlee's is just the best Fighting move in the game. Hell, it even gets Meditate to boost itself. All Hitmonchan has is Submission and Body Slam...which Hitmonlee gets...
At least it's only got better in later generations, coupled with a properly defined niche.