Would his blood be on the hands of the researchers who trained that model?
Your logic sounds reasonable in theory but on paper it's a slippery slope and hard to define objectively.
On a broader note I believe governments regulating what goes in an AI model is a path to hell paved with good intentions.
I suspect your suggestion will be how it ends up in Europe and get rejected in the US.
That's not an obvious conclusion. One could make the same argument with physical weapons. "Regulating weapons is a path to hell paved with good intentions. Yesterday it was assault rifles, today it's hand guns and tomorrow it's your kitchen knife they are coming for." Europe has strict laws on guns, but everybody has a kitchen knife and lots of people there don't feel they live in hell. The U.S. made a different choice, and I'm not arguing that it's worse there (though many do, Europeans and even Americans), but it's certainly not preventing a supposed hell that would have broken out had guns in private hands been banned.