@stux Not to add yet another task to your list but would it help to add this information prominently to the about page as part of the instance policies? (As an educational device.)
e.g., Something along the lines of: “If you don’t want to hear from someone, please block or mute them. The ‘report’ feature is for reporting abuse only. We define abuse as listed in the server terms here <link>”
@aral @stux Some customizable text in a popup before confirming the report would be nice!