Planetary geologist here, you are so very, VERY wrong. They found the moons original crust on Apollo 15 (not 11, or 12, or 14) a mineral called anorthosite "
the genesis rock" which crystallised when the magma ocean solidified. We also now know from orbital data there is a rock terrain called
KREEP that Apollo astronauts didn't even sample, as we only discovered this AFTER the program, the acronym stands for a rocks that are high in (Potassium, Rare Earth Elements and Phosphorus). These formed after the original crust and are thus enriched in these elements, we really need a sample as that would confirm beyond a shadow of a doubt the
large impact hypothesis which we only figured out from going to the moon in the first place! To say nothing of the volatiles in the mantle, or at the poles. The rocks are very VERY different. Especially between missions, and especially from terrestrial rocks.
During Apollo entire geology teams surveyed the moon to choose the best places and the astronauts were given a crash course in under graduate geology, hell even a PhD geologist went to the moon on Apollo 17. All this to make sure were were getting the right rocks back to understand the story of the moon.
Thanks to the Apollo missions. We now know 1)
How the moon formed. 2) There was an event called the "
late heavy bombardment" in the early solar system that effected every planet. The LHB was responsible for delivering
all the metals we mine today. 2)
A dating mechanism for all the bodies in the solar-system which is important for finding life on Mars, as we can date when it last had water at the surface. 3) Why Earth has such a thin crust and plate tectonics (because its orbiting us as the moon). 4) A thin crust and continued
volcanism may be the crucial step point that it may well explain why there is life on this planet in the first place.
NONE of this would be known without the Apollo missions. We should still not know how the moon formed. The age of the surface of Mars or the other terrestrial planets Where all the metals we mine come from, or why our crust is so thin and we are full of volcanoes.
We have 382kg of lunar material thanks to these missions, and we are still learning new things. Every new advancement in imaging or scientific analysis equipment means we get to go to the moon again for free, and learn something new thanks to this amazing legacy and curational efforts of
NASA.
This is a picture of me at the lunar vault.