This post reflects the author's very poor understanding of neural networks, software licenses and copyright law, and borders on misinformation. Please share this kind of shit on Twitter instead.
If your AI is spitting derivative works or straight-up verbatim copies of the original, stripped of a license, and given the original license even allows derivative works, then yes, you better lawyer up. This applies to both software, art, or any copyright-protected work. Legality aside, it is also shitty and on the lower end of morals to abuse people's work/art in this way. AI systems that don't fuck with people and their work are perfectly fine. Stop fucking with people and you won't need lawyers.