I would say starting out with an understanding of modeling helps get you used to navigating Blender first by using selection tools and moving stuff around. Including getting used to some various modifiers. With that foundation you can quickly block out your main mesh before going into sculpting with stuff like the subsurf or the skin modifier attachment. All of that prep works goes a long way to saving you time sculpting when you have the basic shape. However, to do that you sort of need to know how to push meshes around.
Likewise if you want to do anything with the mesh you sort of want to retopologize it and doing that well can be more easily understood with a basis in modeling to help get an idea of the usage of the modifiers, selection tools, and simply how to place down vertices in a way to retopologize anyway.
At least trying to go through retopologizing felt much easier after doing through a few models in edge modeling type.