I agree, me too.
I agree. fine_gravel is just like gravel, but it is smaller / finer particles. It is equally loose as less specific surface=gravel.
If the fine gravel is compacted with even smaller particles (like sand) so it becomes firm and not loose, then it becomes much more solid surface=compacted, on which bicycle wheels do not fall into and is quite good for cycling.
this picture (from surface=gravel wiki page) shows to me what fine_gravel (e.g. uncompacted fine gravel) often looks like (although often it is even deeper / more loose, i.e. more than one layer of it, so bicycle easily falls into it as is hard to cycle over, like this):
It would make no sense to me if surface=fine_gravel was basically exact duplicate of surface=compacted, as that wiki change implies.