
In recent years, YouTube has become a major bedrock of spoilers for all kinds of media, to the point where it's almost impossible to avoid them. These can crop anywhere from the home page, while searching for videos, and even while watching videos through a sidebar of recommended videos.
This is thanks to the platform's recommended video algorithm shoving nearly kind of video, regardless of spoilers, for a particular piece of media, whether it's a video game, or movie, or a TV show, even if you barely watched any videos on the subject.