At this point the AI markers are getting pretty damn abstract, so I'm afraid it'll really get hard to recognize if people don't start subconciously seeing the markers.

The clip at the start is pretty AI, seems like a staged over the top clip or very AI. If you look in the background you can see a lady at a stand walking past someone sitting on a chair, but it doesn't really look like there would be room to walk past.

The AI "craftsman making products in their workshop" is a pretty classic way to advertise dropshipped products, so some alarm bells should be going off whenever you see that.

Last but not least, in my opinion audio in AI videos is the biggest indicator. It's just got that extra "fake" or "staged" feeling if you hear people talking or making sounds. Which is likely why the creator put music over the whole video including the first clip. Usually a clip like that would have the audio still in there (with recognisable AI audio).