I clicked on a few more, a decent number of the links aren't really advocating for murder/violence at all.
There was one link I clicked on that did lead to someone advocating for murder (Kokesh), I didn't recognize who it was and their name wasn't highlighted as an instance Admin.
Looking at the modlog for that user, they have had a number of comments removed for advocating for murder/violence, so this is probably just a comment that slipped through the cracks.