It is a tricky issue, but I can see a good argument for increasing the amount of traffic going through TOR, even if much of it was from users without proper OPSEC.
As with all security, it is an education issue; just as "Private Mode" warns users that they might be tracked by ISPs or other agents, "Super-private mode" would have to warn users that supplying identifying information would jeopardize their privacy.
As with all security, it is an education issue; just as "Private Mode" warns users that they might be tracked by ISPs or other agents, "Super-private mode" would have to warn users that supplying identifying information would jeopardize their privacy.