I will say, at least in the early episodes, they used a ton of human remains. Call me old fashioned, but I’m not sure it was a respectful to punch actual human skulls until they crumble for pure entertainment and the sale of ad time.
I don’t think this is really an excuse, but compared to a lot of other terrible things the US does to human remains, it’s not as bad. Like, at least it didn’t benefit the US military.