Obligatory "fuck AI," however I've reluctantly found that the AI summaries can be helpful on occasion, such as when deciding if a video with a clickbaity title is actually worth watching, or when I'm on YouTube looking for a solution to a problem (in which case the summary can sometimes get me the content way faster than watching the video). So of all the dumb shit YouTube has done to their platform in recent years, I'd argue the AI summaries fall on the "actually not that bad" end of the spectrum.