I am aware of what we are told - - - BUT, we all make mistakes occasionally, I have done it a few times when listing a batch of items and accidentally got something in the wrong category, or when using the list similar option I have changed the description and forgotten to change the title or the picture.
What I am saying is in these cases an email pointing out the mistake, then remove the listing if it is not corrected in a certain period of time.
If a seller has dozens of items in the wrong categories, or loads of duplicate listings then that is a different matter.