Without the usual artifacts, there's still plenty to go on.

The scene just doesn't make sense. They are standing around in a circle parking garage next to a cyber truck. They wouldn't meet up there if they were meeting. Further, think about the camera situation. Looks like someone on a ladder or a drone took a picture from above. That's a weird amount of effort for a pretty stupid shot.

But yeah, if the person has a better sense of plausible scenes, then it's much harder to know if it's an AI image or not. On video we mostly have duration to go by, since LLM vid generation can't hold it together too long (other weirdness happens too of course, but broadly speaking we just can't trust pictures or very short videos).