My point of view is rather too well understood here, Theo.
I do believe that it is possible to self-educate on camera use; that it is easier/quicker to be taught; that Photoshop skills should be taught along with basic art in schools.
I do not believe that anyone can teach anyone else how to be an artist. I believe that in photography, self-education of the eye and mind is the only way it works, and that is done by looking at all the work one possibly can, which is the natural way of anyone sufficiently interested in photography or paint. It's why one is aware of either discipline to the extent that making it a life has any attraction in the first place. I think there are those photographers who never much looked at other's work and simply did it right out of the egg; I've never met one.
Looking at all that work does two things: it reveals to one the field(s) of personal interest; it gives one benchmarks against which to measure one's own progress. It does not, however, give anyone any business sense, which is perhaps as important a quality as any of the others in the mix! In practice, maybe it's the greatest of them all.