Most artists I have spoken to don't believe it's possible to do this AI stuff ethically

Maybe they're wrong but I tend to agree. Or even if it is possible to do it ethically, it still never will be done that way because there's just too much money in behaving unethically

The only problem that people see in these models is the money flows.

If it all was non-profit - then no one would raise the ethical issue.

I don't know

I still think cutting artists livelihood from under them with tooling built on top of their work is unethical no matter how you cut it