Another tip in case anyone is unaware that is reading. You can tell your NPC followers to smash corpses, and I believe it is on by default. So with the help of them it can become much easier if all you want to do is pulp instead of butcher. They don’t smash acidic zombies, like corrosive or spitters either, which is good so they don’t hurt themselves, just remember to butcher them yourselves.
Only problem I’ve found with that, is during battle they will sometimes rush towards enemies to smash a freshly killed corpse I shot with a crossbow bolt… putting them between me and the rest of the enemies. It ends up blocking my shot, and I have to move or rush in to help them. So I just turn the smash corpses option off for my NPCs, but then back on as needed(like after trying to clear a school/home improvement store/mall etc.).
I like my NPCs to stand in place and let me bring enemies to them if I need help, instead of them rushing in mindlessly to smash corpses next to a hulk or something. I am still unclear whether smashing a body that has a chance for bionics to be gained from butchering it, decreases that chance or not. So I like to just butcher those bodies first without having them smash it first, just in case and it makes sense role play wise I guess.
TL;DR: Your NPC followers will also pulp corpses.