I think it was the cost compared to the benefit IF the technology was there and there was no guarantee it was (or would be). I am on the left and I'm not against the idea per se, I just have to be convinced it's both feasible and effective.
He's 100% right. The money the spent on a Mars trip would be better served fixing our crumbling infrastructure. What's the point of sending humans to mars when people die from bad roads and failing bridges everyday?
Of course the same could be said about throwing trillions at the F-35.
One of the things that went wrong with X was that we tried to pull too much of the OS into X so that we could run on every old platform out there. Or to put it more bluntly, bending over backwards for fringe platforms
He seems to forget that Linux was once a "fringe platform". Sigh. https://archive.fosdem.org/2012/interview/kristian-hogsberg