Without data it's hard to tell what is actually going on. I suspect that an algorithmic focused company like Google is aware of click-after (or whatever it's called) rates of videos on youtube.
It's certainly plausible that viewers of the linked video do enjoy watching shocking deaths on camera (for the record, I have a G+ account and am logged into youtube and also see the same video as the 3rd related video).
Without persistent tracking information I'm not sure how you could make this better. On aggregate, people who watch a music video by the Dead Skeletons tend to enjoy also watching shocking deaths on camera.
My guess at a solution is for Google to do more tracking. They obviously don't understand that you don't watch or appreciate watching people die, so why show it?
Edit: If, while you're logged in, you could "X" out videos you don't watch in the suggested video list that could be a great signal to Google that you don't want to watch such content.
I think we can somewhat offer Google the benefit of the doubt here too. It's likely that there's someone else targeting Google's algorithm to get that spammy video suggested to as many people as possible.
As you (mcphilip) said you don't have a YouTube account, so presumably Google has less data on what you might like or dislike. Suggesting more relevant results to you means that Google needs more data about what you like individually. It's balancing that whole "tracking me is evil" vs "showing me stuff I actually want to see is good".
I stay logged into my G+/YouTube account and the suggestions I get are generally acceptable, sometimes even great. I've never found them outright obnoxious in my case.
It's certainly plausible that viewers of the linked video do enjoy watching shocking deaths on camera (for the record, I have a G+ account and am logged into youtube and also see the same video as the 3rd related video).
Without persistent tracking information I'm not sure how you could make this better. On aggregate, people who watch a music video by the Dead Skeletons tend to enjoy also watching shocking deaths on camera.
My guess at a solution is for Google to do more tracking. They obviously don't understand that you don't watch or appreciate watching people die, so why show it?
Edit: If, while you're logged in, you could "X" out videos you don't watch in the suggested video list that could be a great signal to Google that you don't want to watch such content.