I've noticed that this is something that also happened in YouTube video essays. I remember at the dawn of them when I thought it was so cool that there was people out there making these super in-depth videos on all sorts of topics.
But over the past few years it drew in the attention of people who really don't have much to say, and stretch these videos on, talking in circles, as if longer video = better/more interesting.
I recently saw YouTube recommend me a video essay on the Nickelodeon TV show, Victorious, that was literally more than 5 and a half hours long. Admittedly I haven't watched it (for obvious reasons) but I just can't imagine it really justifies that entire runtime.