This sounds like a personal thing for you, honestly. Are you sure you're not getting just a bit overly invested in getting angry that a younger woman than you is more popular on the internet? I just can't shake that feeling for some reason.
No, again, you don't know what you are talking about. She went through a brief period of using a stage voice when she was new to streaming and nervous, but relaxed into her normal voice and accent as she became more normal at it.
A very autistic woman has a strange way of speaking that makes her sound odd to some people?! Such a revelation! Besides that; as I said above, she had a short period of time using a stage voice out of nerves, but it was never a serious thing and she dropped it later on when she became used to the role.