Maybe the graph is supposed to show that (for some reason exclusively male) rapists decisions are evil beyond the physical rape?
Ie that rapist-ism is a continuous function (that is all morally evil), not just a discrete step sudden evil. I can see how claiming rape as a one time thing is used to minimise victims experience, and I agree that this is a valuable distinction. I just can't see why the author felt they had to base the graph on gender.
Then again, the author is human like everyone else so I guess their personal experience (on a topic like this potentially even PTSD) will bias their work, and we can't expect everyone to be perfectly woke 110% of the time.