AI “art” is prone to nonsensical hallucinations with people gaining extra fingers, background elements bleeding together, and everything just looking uncanny. It’s technically possible that you could train yourself to try and imitate this “style”, but it would be both incredibly difficult to learn, and also be incredibly unrewarding- even putting aside having to prove you did, in fact, make said piece of art, it would still be as ugly as the AI stuff no one likes anyway.
A lot of AI art used e.g. in YouTube thumbnails is uniformly busy, bright and colorful. Which means that nothing stands out, while the eye is immediately tired of the detail. It’s pretty much the opposite of good art practices. That said, it’s quite reminiscent of 80s fantasy art, which also was often overly elaborate and loud.