The idea is to be able to update your own comments without requiring an admin to do it.
You can only update your own comments
You need to be uniquely identified (by login)
Context: We are using silverstripe for https://extensions.libreoffice.org/ one of our users suggested to be able to edit their own comments and reviews in the page. The need to change a review it’s also important for us since new versions of an extension can change the review.