[I didn't read the article, but] I think the move to buying songs one-at-a-time has hurt the whole 'album' concept, including long intros, long interludes, and the idea of a body of work that builds on a theme.
Anecdotally, we've seen whole-album concepts become big hits in recent years: Kendrick Lamar's To Pimp a Butterfly, Kanye West's Life of Pablo, Chance the Rapper's Coloring Book, etc.
On top of that, almost all hip-hop songs these days have intro tags (which producers worked on the song.) Not instrumental of course, but non-song content none-the-less.