why though?

A no hit run would basically be an any% run with a few extra inputs and hoping the enemies aren't in bad positions. I did a little test run to see how a no hit run would be and I've come to the conclusion that it'd only be a very little bit away from an any% run, the only point that could really lose time against any% would be the tricky jump at the end of the game which doesn't even lose that much time, so I'm not going to add it as a category.