Full butchery vs quick butchery already served to simulate proper harvesting of meat vs just doing it on the ground, and dissection is already such a huge chore that I don’t think it needed another requirement. You’re just hunting for a piece of metal in the corpse that’s already filthy no matter what, and a concrete floor isn’t substantially different from a plastic sheet I had stuffed in my bag.
This is an extra step we didn’t need. As said above, native americans probably butchered animals in new england just fine before europeans showed up with nails to build tables. There are any number of videos on youtube of people butchering animals on the ground or in their hands (not for the faint of heart): https://www.youtube.com/watch?v=uBcokkJh6n4