It seems these days, most Youtube creators are at least somewhat aware of the problem and have websites, discord channels, patreons etc. While I still think many would struggle if they lost their youtube access suddenly, they do have additional channels to reach out to at least part of their audience.
But if you want to see people trying to make the conversion just scroll the front page of Rumble. Many of them are trying to get out form under youtube and many have YT channels too. But Rumble is just another YT waiting to happen and they know it.
The people there are both video creators and their own hosts, or so I read. Got together and built themselves a host because YT was not what they needed.
i saw they post pretty well produced videos on youtube -- for folks like me
but also promote a more elaborate/detailed video series on the same/related topics on a separate subscription based platform