Well it will be, because it's detecting AI-generated content indirectly. What it's directly detecting are bot posters, which are much easier to spot.

"AI detectors" have the uphill job of having to figure out whether something is generated by looking only at what was generated. Fakespot and tools like it get to use the metadata, which has many telltales that bots aren't even trying to hide.

IDK chief. It seems like one of those things that are hard to do in theory as you said, but relatively easy in practice.

I mean just about any human who has played a bit with ChatGPT nowadays is able to identify ChatGPT generated paragraphs within a few words. I don’t suppose it would be much harder for a machine.