Are these facts about moon true?
Orbital radius depends on speed of the body. Size is largely irrelevant. Imagine a  space craft and much larger space station, able to orbit meters apart at the same speed, with engines switched off. An astronaut going on a spacewalk would be launched away from the station, being much smaller and so on wrong orbit. No. It's as relevant as "Boeing 747 shouldn't be able to fly because it's painted the wrong color." False and based on wrong premise.
For anything to ring you need atmosphere, a medium for sound to travel through. Moon, floating in vacuum, doesn't ring, nor create any other sound for that matter. Even the most powerful meteor impacts are entirely silent. False and based on wrong premise.
Countless iron meteorites hit the surface of the Moon, often shattering on impact. Specks of iron are very common in lunar soil, and I have no doubt it's entirely possible shavings-shaped pieces of lunar meteor might have found their way into the samples. Likely True and nothing odd about it.
...how does that even relate?