Oh boy, that feature is hilarious, but might have unintentional repercussions for people who do paid adverts in their videos: I was watching a cooking channel one where the guy did a recipe, did an advert for a wine company, then did another recipe, and the retention graph shows this MASSIVE dip through the advert, then a huge peak when the second recipe started, and that pattern repeats in almost all videos across the board, from movie reviewers sponsored by Squarespace to Costubers sponsored by eco-shampoo firms.
If the advertisers start analysing that type of data some Youtubers might start suffering.