Agree with that.
Not sure because of the site feature or not enabled here (Never made a game jam before). However, if it is because of the site feature, use the "Feedback" button on the left (usually on dashboard page). Hope the itch.io staffs will pay attention to it. They are really reading the feedback (I tried it before, got replied fast).
Currently, I will use comment in the game rating to promote my self (of course after tasting the entry).