This stopped being useful about a year ago. It still marks many known transphobes as red, but unfortunately it also marks A LOT of gnc, transmasc, intersex and other folks as red. Someone out there is deliberately targeting these kinds of users, and unfortunately it seems like whoever runs this extension either doesn't care to actively take appeals to un-mark targeted queer folks, or doesn't have the time or means to change anything for the positive. Neither of which are remotely acceptable excuses.