It's not that it's fake. It's that it has a distinct style.

I once thought that AI image/video would quickly become unidentifiable, but the surprising thing (so far) is that every new model release is followed by two reactions: "This is incredible" to "I recognize this style. It's AI. They're all the same."

It takes only a few weeks. I've been amazed with our mind's ability to move the goalpost.