Yeah. Millennial Writing and the creatives who use it are very influenced by Joss Whedon, and TBH? they don't know WHY his writing for shows like Buffy the Vampire Slayer worked in the first place. Buffy was a sincere show even with the lampshades and in-jokes (I.E. "Nightmares", the highlight of that show's first season and one that is 100% sincere in its plot and the torment Buffy and the scoobies go through), and most millennial-penned works of fiction are anything but, mainly due to these people having insane egos the size of Arrakis (to quote one of my two threads on one of the worst offenders, Netflix May Cry).
Thing is, it's okay to tell a joke to alleviate tension. But you need to be genuine as you do so, and millennial writers lack this quality.