Right but on the quadrants of predictions of timing vs imminence, all the examples are in one quadrant to justify the need to act now. Fair enough for reinforcing a narrative but a tad disingenuous.
The alternative would be technologies that were never developed at all, most of which never had this sort of discussion and therefore wouldn't work as examples.
Take a more historical view, though, and you'll notice there were people claiming flight was near even decades before the Wright brothers.