Notice the phrase "from a moral standpoint". You can't argue against a moral stance by stating solely what is, because the question for them is what ought to be.
Really depends what the moral objection is. If it's "no machine may speak my glorious tongue", then there's little to be said; if it's "AI is theft", then you can maybe make an argument about hypothetical models trained on public domain text using solar power and reinforced by willing volunteers; if it's "AI is a bubble and I don't want to defraud investors", then you can indeed argue the object-level facts.
Really depends what the moral objection is. If it's "no machine may speak my glorious tongue", then there's little to be said; if it's "AI is theft", then you can maybe make an argument about hypothetical models trained on public domain text using solar power and reinforced by willing volunteers; if it's "AI is a bubble and I don't want to defraud investors", then you can indeed argue the object-level facts.