This is something I don't understand about some people and some platforms. We know several social media outlets basically dump people on a whim. What I do not understand is why people on these often used platforms do not take the simple precaution of letting their audience know where to re-find them if they are de-platformed.
In the event my pages should go down you can always find where I am hosting my video content by visiting my page on the Hive Block Chain
Seems to me a simple solution. They can then let people know about their name change or page change or what other video hosting system they went to, maybe some will follow them on Hive and join and then vote for their content, and slowly shift over to Hive.