"Highlights transphobic/anti-LGBT and trans-friendly" more like only doesn't highlight trans women who are the "right" kind of trans women. Ironically this extension is INCREDIBLY transphobic and also homophobic. It's a scam, don't download.

Also, I don't see why you would download this in the first place. Why would you trust a Firefox extension to make choices for you about what to believe? You're just begging to get fed misinformation. Go through a page yourself and make your own informed conclusion instead of taking the easy way out.