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
Sometimes there's tons of effort put into this format. I once watched a Let's Play of the 2012 XCOM that integrated the story, characters and missions from the game into some kind of original visual novel plotline with new main characters who were, of course, all anime school girls. Tons of graphics, art and an animated anime opening. Really impressive and also weird seeing original cutscenes where the XCOM advisor characters report to some 15-year-old anime girl general.
Felt like a pretty accurate representation of what would happen if a Japanese company went full ham on localising the Firaxis XCOMs
Yeah I've seen users make entire videos about tabletop rpgs starring a cast of touhou characters playing complete with voices. It's neat, it's otaku culture, but there's the elephant in the room of the girls are being underage and sexualized.