Stone fruit trees and fungicide

everyone around here (foothills of NC) insists you can only successfully grow stone fruits if you use fungicides quite regularly. is anyone growing stone fruits around here without the fungicides? any thoughts or tips? I imagine the general permaculture resilience helps quite a lot but anything specific is helpful. I’d love to plant peaches and plums but am not willing to use fungicides

What specific fungus is it trying to prevent?

What are they doing to the soil to make the tree stronger?

I've used Sulphur on some fruit trees in the past,  made no difference so I saved my money and spent it on lime to spread around the drip line of each tree each winter.  Much bigger difference.