[bunderbunder]

I think, though, that you're getting caught up in quibbling over choice of words and, in the process, missing the point of the article. It's not really advancing the conversation, it's just pedantry for the sake of pedantry.

There is an interesting difference, though it's not the one you've chosen to frame your comments around. It doesn't matter that the Roomba has no more moral agency than a sack of hammers. That's a point the author passes by on the way to the real crux of the article, which is that autonomous machines have a way of masking this fact in a way that tricks humans into ceding their own moral agency. That example of a person who wouldn't knowingly vacuum over a cricket but happily uses a Roomba is just a less politically-charged proxy for the question of autonomous military robots carrying weapons.