Yeah I had this argument before and the other guy made about as much sense as you are right now.
I mean, if you can provide poll numbers or something of the number of people looking at these images and coming away with the idea that Diana isn't compassionate that would be great. But this comes across as you projecting your view on what the sword represents on everyone else. Not to mention the goal post moving. You already admitted that Diana does use lethal force as a last resort, so again, why is her using the sword as such a big deal?