I’m not the previous poster but I do think it’s AI for a few reasons.
Visual distortions on some fine elements such as the top of the plant in the lower left.
A number of bird shapes that don’t make any sense.
The reflection in the water also doesn’t really make sense - there’s nothing with that color pattern it could be reflecting.
There’s an odd green object that looks like an alien skull or something on the rock over on the right.
Maybe it was generated partially with AI or cleaned up by a human artist who worked on it for a while, but I also thought it looked like a computer image. But overall it’s a nice effect and an interesting style.