We do need optimists if we are going to dream and build a great future. Techno-optimism has become almost a taboo, sometimes even within the groups that actually work on cutting edge tech (at least on the computing side of things). We shouldn’t be naive and ignore potential negatives of course, but more optimism and dreaming of a great future we can build towards should be encouraged.
I am not optimistic that humans can develop the emotional fortitude needed for this reorganization in the time required.