We’ve been around this block before, but contemporary hip hop differs from the hip hop of 20 years ago only in details. Biggie to Lil Yachty is not as Marvin Gaye to Biggie. Look at Ski Mask’s best known song. Hip hop stopped too, but more recently.
@Adrian, yes rock music has stopped. Parquet Courts (corrected) and the Flamin’ Groovies, separated by 40 years, but not by any artistic decisions. This is kind of the point; the comparison between 1933 and 1976 emphasizing the dramatic squeal of the brakes.