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
Things that are much more common for them:
-Basic TTS used in abundance for both the video creator and to read chat or other texts. Pretty much almost every stream is going to have a TTS reading chat. I don't follow JP Vturbers too much but because their chat is so much bigger they don't use TTS as much so this is a recent change.
-The niconico format which I believe they pioneered with the user comments flying across the screen.
-Using avatars and mascots for communication. This is a mix of privacy but also cultural. Asians are also more used to wearing masks too. But in general if you ever watched regular Japanese TV variety shows than presenters/participants wearing things like costumes, mascots, avatars, chibis and even anime are much more common.
-There is overall a different attitude towards anonymity and your "image". Media creators(manga/novelists) will often do public appearances but still hide their identity. This is purely to avoid harassment and the cultural obsession with manners and behavior also plays a role. I can't believe YTers are any more likely to want to put their actual face out there for no benefit.
But putting your face out there IS the benefit :soypoint-1: