This extension has become absolutely useless for most purposes. Perhaps as a transmisogyny detector, however trans women will always be marked green by default, regardless of how horiffically transphobic they are towards other trans people.

The developer has specifically stated that slurs aimed at nonbinary people are acceptable and will not result in a negative rating. It appears slurs and even straight up misgendering and transphobia aimed at transmascs are acceptable too, because everyone I've seen using them repeatedly and stating their hatred for transmascs has been either marked green or occasionally unrated.