alt Hacker NewsYou didn't explicitly call your examples major milestones of human progress but you did use rather trite examples of consumer capitalism as a counter example to my disappointment at the lackluster end game of 20th century techno-futurism.
As other commenters have stated the techno-futurist vision that comes out of the Whole Earth Catalog was radically utopian and far grander then "I get to watch low value consumer media whenever I want."
I’d say dirt cheap solar panels and CRISPR based vaccines are pretty cool. I’m also quite optimistic about the proliferation of plausible SMR designs. That new concrete that self heals and sequesters carbon is cool too.