I’ve read several Chinese comments that say it has already mutated into something worse - if that’s at all true and we have no way to know, maybe what we are seeing here in the West is the original strain, while the really bad one wreaks havoc on China. That would explain the forced relocation to sealed camps with no anything - just a place to die.
If it has mutated into something worse, then given the population of China and the number of people (Chinese and others) who have been there and come out in the last several weeks, then it’ll also start showing up here.
I will believe that a bad mutation has occurred when standard treatments that were previously working either stop working, or work at much lower levels of effectiveness.