Hot take: it's reasonable for a comics student to use AI for script-writing and for a screenwriting student to use AI for concept art, not because machine can generate meaningful artistic work at these fields but because these are not the fields they are trying to learn.
In a way, this can be used to level the field. The comics professor can use the same LLM to generate scripts for all their students. It'll be slop script, but the slop will be of uniform quality so no student will have the advantage of better writing and it'd be easier to judge their work based on the drawing alone.
And even if AI could generate true art in some field - why would it be acceptable for a student to use it for the very field they are studying and need to polish their own skills at?