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
idk about anime girls pngs, but I saw some Japanese videos that use TTS. It reminds me a bit how people on Spanish/Italian/Portuguese youtube used a program called Loquendo TTS to narrate their gameplay videos back in 2009/10.
I think it is because these are mainly made by teenagers who want to remain anonymous and have some fun making videos. Also these TTS voices have no accent, so more people can understand the video.