>>72742552That wouldn't work on YouTube because it's completely normal and encouraged to manage multiple channels for separating your context to different audiences. Changing what kind of content you make on a channel can have drastic negative effects.
On Twitch, it's not really common because it's better to be able to stream as much as possible no matter what your doing. Seperating your channels would just make you appear to stream less and make it harder for your followers to find you.
Different platforms, different strategies.