Don’t bother, will not change his mind. He will spin any kind of argument to have black-and-white position on the issue that matches his opinion. There is fortunately a way to block users on this forum, so you will not need to engage with him if you do so.
And I just read that article: The scary truth about AI copyright is nobody knows what will happen next - The Verge
This bit highlight the issue nicely:
To answer these questions and understand the legal landscape surrounding generative AI, The Verge spoke to a range of experts, including lawyers, analysts, and employees at AI startups. Some said with confidence that these systems were certainly capable of infringing copyright and could face serious legal challenges in the near future. Others suggested, equally confident, that the opposite was true: that everything currently happening in the field of generative AI is legally above board and any lawsuits are doomed to fail.
“I see people on both sides of this extremely confident in their positions, but the reality is nobody knows,” Baio, who’s been following the generative AI scene closely, told The Verge. “And anyone who says they know confidently how this will play out in court is wrong.”