I don't know the content breakdown of online videos, but i know that creators like audit the audit are in the algo; and that's trauma based entertainment as well. the "here's the story and police interview of so-and-so", plus the news stations that have youtube presence.

Movies are another one, and lots of people watch movies. If i go on hulu or netflix and start tallying the genres (either TBE or not-TBE), what do we figure it will be?

The person i heard use the phrase "Trauma Based Entertainment" used it to describe movies that "we were sat down to watch when we were 9-12." Unfortunately the podcast i mentioned isn't super-advanced on the backend so i am unsure how to share clips at this point. But i've heard before the claim "young women as a demographic listen to true crime" repeated as a truism. I know the women close to me listened to this sort of content in the past or currently. I'm not trying to generalize this to the entire cohort.

also i only think, myself, that it's harmful, TBE/true crime/etc; i'm not a sociologist or psychologist.