I have been at some marinas where the dockmasters will uncoil your neatly flemished coils.
The is the thought that they help promote dock rot.....hold moisture...especially neat the cleat.
Also many commercial guys will never use a half hitch to finish of a cleating...have seen then jam too often if the line isn't just the right size for the cleat or whatever tying to.
If you've ever tried to remove a cleated line with a hitch in winter you'd know why us commercial guys don't use them. They're unnecessary anyway.