You're kinda right but it's exactly the ease of generation and the lack of time and money spent which makes people value AI output less.

A fake Gauguin painting and a real one can be almost indistinguishable to the human eye. But only one is worth the big bucks. Everyone scoffs at the other (once told which is real and which is fake). Something similar might happen to AI where the requirement to disclose it becomes a signal that the creator has cheapened out