in the super mario mash-up world on switch zombie pigmen and pre-village & pillage villagers exist. this could easily be fixed. remove them from the game code.  the egg is called spawn zombified piglin but you get a zombie pigman model and texture (unless there's a texture pack applied such as the mario pack). honestly, i think pig men could be used as an addon because so far they're for marketplace worlds only but all nether update is gone in mario mashup.