Well it is a hypothesis.
I suspect there were solid reasons for using civilian contractors for transport and not just a decades old oversight, but they are hidden by time. I’m also wary of “common sense” assumptions. I think it’s quite possible that your average peasant had some familiarity with someone else’s plow horse, but not much more.
Certainly the artillery officers had a smattering of technical training and it was probably mental salve when dealing with bluff infantry or dashing cavalry officers at the soiree, but there was (in Russian service) one officer per gun section. Half the men were trained in gun drill and the other half just told to pull the bricole.