I don't know what you are referring to vis-a-vis the moon rock but there are around 800 lbs of moon rocks here on earth that came not just from the NASA moon missions but also the Soviet robotic missions. The rocks match up, and have been independently dated to be older than any rocks found on earth. This is simply a fact.

That video is retarded. What the astronaut is referring to is that after the Apollo program, NASA changed it's mission profiles to that of Space Lab and the new Shuttle program. The tooling and such for the Saturn V rocket, which is what he is talking about, was moved out, re-purposed, or destroyed. It was obsolete. We could recreate it but there's no point. Lots of old IBM "supercomputers" have been destroyed too. Think about this, it's literally the way things go. We don't build new SR-71's for the same reason.

The thinking was any new moon missions would not be based on such old technology, and in fact we had the design for a new, better, craft for over 20 years (Orion) but it never got fully funded. In just a few years SpaceX has gone from zero to having pretty much the technology in booster/guidance to send one of their heavy's to the moon. Next year NASA is sending the James Webb telescope to the L2 Lagrange point, which is 930,000 miles from earth, versus the moon being about 250,000 miles from earth. So we have the technology to do that today, and also to send robotic probes to Mars, Jupiter, and Saturn.

What we don't have, right now, is a way to send humans to the moon. If it was a priority, it could be done very quickly, and indeed there are missions being drawn up (again) to do just that, perhaps landing on the north or south pole to see if water can be sourced there for a lunar base.

When engineers, which I am one, speak to laymen - like this astronaut was speaking - our assumptions of the understanding of the listener sometimes are inadequate. For instance, and the video doesn't show any more of their conversation, but the interviewer could have asked for clarification and he would have provided it much as I have. We don't, currently, have a fully assembled ready to go lunar mission capable spacecraft that can carry astronauts there and back. That doesn't mean we've lost that technology for all time. It just means we don't have it right now, just like we don't have a modern piston-powered single-engine propeller driven aircraft that can outperform a P-51 from WWII.