Uh, wow, don't really know where to start there.
My craft is not painting. My craft is designing characters, locations, scenes, interactions, storylines, events, etc. The visual aids I use are accessories to the craft, not the craft itself. My craft is not damaged because I outsource a minute portion of it. Is the creative process "damaged" because a baker doesn't make chocolate chips from scratch for their cookies?
There is no flitting back and forth, there is no contradiction in making a particular visual aid to assist in efficiently conveying information, and that depiction only being necessary for a few moments.