Personally I think StudyTube will rapidly go down the drains and completely fizzle out. We see the same happen to other YouTube categories. Take the so-called Beauty Gurus. The original crew has long since stopped making them. They got on with their various careers, married, have families now. But there are a few that can't quite let go and it is pretty cringe watching someone like Tiffany D, well into her thirties if not nearing 40, or Tarababyz, constantly hauling things because their lives are so empty and they need to feel that immediate satisfaction of buying something new, that passes within the day. While decluttering your makeup collection was a thing before Covid, not being able to go out in public or have to wear a mask really kicked that movement into full gear and almost everyone got a reality check. Now they have either left YT or found another odd obsession to vlog about. The Kawaii movement started to get big a long while back, but walking around in little girl clothes when you are in your late 20's was also cringe, so unless you live in Asia and do it as an actual career, it is shortlived. I don't think the US ever really got into studytube. It seems to be mostly a UK phenomenon that we watch from the sidelines, but overall have no interest in mimicking. Who knows what the next "aesthetic" or "trend" will be, but I am sure Ruby will try to hop on it, fail and like many other YTbers, will find herself lost in the real adult world with very little to show for it.