I've used this extension for years. It's been pretty useful, but lately the flaws have become too rampant to ignore.

A large number of people have been mistagged, with rabidly transphobic authors being marked as trans-friendly (often due to them having been reasonably trans-positive in the past) and people who aren't reasonably able to be described as bigots being marked as transphobic. Of note is that r/XenogendersAndMore is still tagged as transphobic, which is an issue that has been known for years and hasn't been fixed.

This leads me to believe that this extension simply isn't being maintained at all. Any kind of review process that may have once existed clearly no longer does. I'm not sure if it's because the developers got overwhelmed, or just abandoned the project, or whatever, but it appears that there's just no accuracy checking occurring anymore, outside of sheer mass of reports.

Given that, I can simply no longer recommend using this extension. With a lack of any kind of maintenance, quality checking, or anything else to ensure that tags stay accurate, it is far too open to abuse and will likely continue to decline in usefulness.