Over the years I've noticed that much of Japanese video content is presented in the format of a dialogue between two anime girl pngs using text to speech voices as opposed to just some guy appearing on camera or narrating whatever the video is about.
Like if you wanted to watch a review of a new monitor, it would be one anime character explaining the pros and cons to another character
Is it a greater cultural preference for anonymity, or are people just more likely to ingest information if it's presented by Touhou characters? Note that I'm not talking about Vtubers here, this trend is much older and covers pretty much all possible video topics
Interesting point, let's look at the countries where child beauty pageants are everywhere, all shows about teenagers are obsessed with sex and sexuality to the exclusion of other points, fantasy and science fiction novels and games frequently feature unusual age dynamics between members, and underage pregnancy has been considered a mainstay of trash entertainment.
There was a countdown to Billie Eilish turning 18 so porn of her would be legal, and she's not marketed to the Japanese Audience. 4chan is also dominated by westoids, not Japanese people. Just consider the fact that most imperial powers have a pedophilia problem, you're just used to your flavor of it.