Are AI art generators illegal?

I'm curious, are AI art generators considered illegal? It's a fascinating topic, especially with the rapid advancements in artificial intelligence technology. On one hand, these generators can create stunning artwork in mere seconds, but on the other, there are concerns about copyright infringement and the impact on artists who traditionally create works by hand. Is there a clear legal stance on this issue, or is it still a gray area that's being debated and discussed?