It's not a problem for me to draw Micky Mouse. It _is_ a problem when someone pays me to draw an animated mouse and I sell them a picture of Micky Mouse.

For me, its not really about the AI at all, it's a problem of undervaluing Artists contribution to these tools. And it's not even fully about copyright it's about not asking for permission to use their content and then creating an entire business on top of that stolen content.