Now, I know what you're thinking. In Over the Garden Wall, when that one pumpkin guy is carving a pumpkin with a knife, is that OK? Yes. That guy is already dead. He can do whatever he wants.
Michael Myers never ran with his big knife and honestly practiced decent knife safety even if he did decide that people were better knife storage places than a drawer or knife block or weird magnet on the wall
Probably wouldn't recommend it for the residents of Pottsfield due to the lack of fire suppression systems and no evidence of a fire brigade in their town.
It's true! I only use regular kitchen knives to clean out existing cuts. They're not flexible and can't do the curves required. I use specialized saws and pottery tools.
The drywall saw I use to open lids would get you. The small saws and linoleum cutters I use on the faces could do damage but you'd have to work at it.
The damage comes in the form of tiny cuts you don't know you had until you learn pumpkins are very slightly acidic. That and repetitive stress.