You might be interested in the "Commercial illustrators will keep their jobs, but will mostly need to learn to use AI as a part of their workflow to maintain a higher pace of work" section of the article, which gets into this more.
The more plausible evolution is that people drawing the base concept are not "commercial illustrators" nor have art training.
If a magazine editor with run of the mill drawing skill can feed the prompt a sketch with stick figures and object outlines, and get back a good enough rendition with an improved composition, the job of the illustrator will be a side job of that editor.
I'm partial to the argument that being able to fix the generated image in post is a valuable skill, but on that part we already have decades of progress and people are usually more comfortable with editing tools than drawing tools.
