No there isn't (a big difference)

Like, really. If I open ms paint and just do some low effort scrawl, I have copyright on that. Level of effort has not ever decided if something is copyrightable or not.

For derivative works, there is real effort required to de distinct from the original. Maybe that's a more interesting discussion... Is low effort use of an AI insufficient to prevent the copyright from reverting to the original authors it was trained on?