That's not what the previous comment is referring to. They're referring to false positives, i.e "Gemini did not generate this (or process it) yet it says SynthID confirmed"
So imagine the damage you could do to an artist by having Gemini flag it then saying “see here’s the proof they’re using AI art!” That person would get eaten alive.
I feel like it is even worse if we have a marker that is ALMOST always present on AI images. It would make us more likely to be fooled by an AI image that had them removed, because we would trust the marker.
You can count on them doing it in a way that's economical for them. It's how email spam filters and ad blockers work. Sure somebody will always find a way to bypass it, and that's the arms race. A filter with zero false positives that removes 80% of slop is pretty darn good though.
Are markers being removed here the same or similar to ones tools might add if you use an AI tool just to edit a photo? like a more complicated object removal in a photo editor?