I read Moon is a Harsh Mistress about 40 years ago, along with a number of other SciFi books.
Didn’t remember the throwing rocks at earth. As a young woman was intrigued with the power of women in their limited numbers, dual marriage, communal marriage, matriarchs keeping it all together, etc.
I read it before puberty, so I was more interested in the science and the political theory than in the sexual dynamics.
Heinlein is a better storyteller, and his post socialist brand of libertarianism seemed closer to workable than Any Rand ‘ s myopic objectivism. There was a vast array of political theorizing going on in science fiction - all presented in custom universes designed to make them seem compelling and workable.
I still like the genre, although much of what passes for sci-fi is a bleedover into fantasy fields.
A good rollicking (swashbuckling) space opera is good escapist reading. Check out Baen Books for some good ones, and If you haven't read the Honor Harrington series, you might enjoy them. Political intrigue with good ol' shoot-em-ups!
I cut my teeth on Asimov, Heinlein, Bradbury, HG Wells, Jules Verne, Arthur C. Clarke, Harlan Ellison, Edgar Rice Burroughs, and a host of others. Although I don't recall which books/stories involved slinging rocks at planets, but the idea cropped up in a few places.