NASA just got the Orion spacecraft that will fly astronauts around the moon (space.com)

Lockheed Martin’s press release: https://investors.lockheedmartin.com/news-releases/news-rele...

I'm a bit confused as to why something that could be achieved with a single Saturn V launch 60 years ago, now requires about 10 launches of a heavy lift vehicle with 100t LEO payload, plus an additional launch of another, completely different heavy lift vehicle, and an orbital rendezvous of two different manned vehicles?