Nitpick: Silicon, not silicone.
To repeat a quip I heard in Sunnyvale forty years ago, Silicon Valley is where they make electronic stuff. Silicone Valley is Carol Doda’s chest.
Oh, and:
But it could just as well be the other way around: Maybe a thousand years hence, these crashed rocket stages themselves will somehow end up crucial to the advancement of science. I mean, right now, ancient sunken Spanish galleons are a treasure trove to scientists, for their old lead ballast that’s been under the ocean for centuries.
That’s true, we could put a moratorium on moon collisions while scientists debate the pros and cons of this and other impacts and oops, too late.