It has been noted of late that YouTube is full of bizarre, malicious and outright depraved viral chum based on childrens' entertainment. Often difficult to tell at-a-glance from the real thing, they crudely subject popular characters such as superheroes, Disney Princesses and Peppa Pig to algorithmically-generated trauma scenarios. YouTube, shamed into action after being exposed feeding this stuff to kids via the discovery sidebar, launched a massive crackdown, banning accounts and removing thousands of videos.
So don't expect this perfect (and safe for work) example to stay up much longer.