Because sometimes a change to the base weapons kind of breaks some aspects of the weapons in randomizer. The Soda Popper update for example, you gain hype normally but it activates like the old one but doesn't give minicrits nor jumps.
Not sure if we have control over the randomizer codes or if we have to wait for the creator to update everything or w/e.
Also maybe if we can edit it then maybe if we can taunt with any weapon, stuff like amputator is useless if you can't taunt with it.