Do FUE sites regrow?

Does everyone who has an FUE mean everyone that the follicles get transfered from the donor zone, have small scars and loss of the hair grafts from where it was taken? I noticed a lot of ppls donor zone regrowing after surgery so im a bit confused

It would take an act of G-d to grow hair that has been removed from FUE. Doctors are not G-d. Small scars occur with FUE, that is just what it is and the follicular units are gone forever in the donor area.