trees don't need much of anything, they're perfectly capable of growing on their own. I can't imagine they prune any of the fruit trees in my city (beyond like, removing big damaged branches and stuff that just applies to literally any tree in an urban area) and they produce fruit just fine.

Fruit falling to the ground isn't particularly problematic either, like yeah it rots and stuff but.. okay? who cares? it's gone within like a week and if people are really so unable to handle the reality of food then they can toss it in the compost.