While I don't necessarily disagree with his thesis, I think the author cherry picks points and creates a narrative where there isn't one. He mentions the last "shared cultural moment" was Buzz Aldrin landing on the moon. Personally after watching it live, I'd argue Space X launching humans into space is one of those "moments". This all comes down to your own interpretation of the events and there's so many other exam…
Also, if you ask anyone who was at least 5 years old in 1969, they will tell you the two events were nowhere near the same on an emotional and pure coverage level. The moon landing was by far the most-watched television broadcast in history up to that point, and held that record for a decade - 650 million viewers for a live event. Demo-2 was less than 11 million (with probably a billion more people having access to it than in 1969). It kind of saddens me that America has gotten to the point where people think these two events are equivalent. We've really lost the sense of what national identity-defining big projects even mean.