This really needs a "disturbing content ahead" warning on the parts of the site that have graphic images. I really don't expect to see decapitated bodies when I randomly click a link.
In practice you're absolutely right. Will get on that.
Yet my wife was furious with me the first time she used grasswire for those same reasons. "I don't want to see that" is a reasonable request. So we have to find a balance there - we have to warn but not censor. That's tricky when things are live and we don't technically control what others are posting - it may end up as a blanket "stuff on this site might be graphic."