I've had Shinigami Eyes installed on my browsers for almost the past decade, and in its early years it was extremely helpful for rooting out radfems and the like. Unfortunately, over the past year or so there's been so many false flags, especially against trans men, that the extension is practically useless. The guidelines do state that being trans does not exempt someone from transphobia, yet people are being flagged red for talking about basically any aspect of transphobia and intersex experiences other than transmisogyny, while actual TERFs and other transphobes have been marked green. It's honestly kind of sad to see how far this extension has fallen