And I also disagree that saying that Apple has given up on their "playlists" or that they are stagnant in content. There are many playlists within Apple Music: the auto generated ones e.g. Chill Mix which are refreshed once a week, the Beats1/Guest ones which are refreshed very often e.g. a few times a day and the ones littered through Browse which again are often updated once a week.
Which "playlists" are you referring to ?