Maybe in the very, very distant future after most humans are dead, sure, they won’t use them on civilians since they’ll exist in so few numbers as to make it meaningless.

These weapons are likely to see battlefield use in our lifetime. Wealthy nations (basically just NATO) will have these. That means when the US invades someone (which we most certainly will at least 2-3 more times in our lifetime) the opponents will most likely have human soldiers and humans living in the cities. Our robots will slaughter their soldiers. Our robots will occupy their cities. Our robots will kill any of their citizens that resist. There’s no need to discuss the robots our opponents will have because they won’t have any.