Simply does not work like they say it should. Tried it on text that I generated using Claude, ChatGPT, and LLAMA, and every time it said that it was human written text.

There's no bug tracker or source code repository linked in the add-on description; it doesn't function on addons.mozilla.org; it doesn't use the native sidebar, instead drawing its own; how it differs to fakespot-fake-reviews-amazon isn't obvious.