Like all comic book characters (Batman used to carry a gun! Wolverine had super-speed and his claws came off with his gloves!), the Punisher has changed a lot. In his earliest appearances, he was firing automatic weapons at some dude who threw a paper into the trash and it fell out because the trash was too full, calling him a litterer. Dude was *nuts* about killing criminals.
And then 'heroes' with guns (and pouches, and headbands) got popular, and he got a more sympathetic portrayal (and was drawn differently than the scrawny curly-haired lean-faced man he was originally depicted as, getting muscles and a more square jaw and straighter hair, because thin dudes with curly hair have to be crazy supervillains like Harry & Norman Osbourne).
When was the Punisher ever depicted as curly-haired and scrawny?