The formula for determining the likely quality of a user created #YouTube video prior to actually viewing it is enormously weighted by the age of the video on YouTube -- that is, how long ago was it uploaded. With some exceptions of course, the longer the video has been on YouTube, the higher the probability that it will be both higher quality and not be AI Slop. The sweet spot seems to be more or less between 5 and 10 years ago currently, though great ones go back as far as 15 years ago and even older. As you reduce the time online from 5 years toward current day, the quality factor tends to decrease rapidly and the AI Slop factor rises almost exponentially.