I am using discourse for a school, and students like to give teachers anonymous feedback without being scared that teachers will know who it is, and dislike them, however the principal needs to be able to see someone if they make an inappropriate post.
I believe you, and I know its easy to find the real anonymous throug nginx logs, but if the Discourse itself make it easy the student needs to be warned. And the warning alone will make you loose a lot of valuable feedback, making all the feature useless.