There is a fine line between valid criticism of gender roles & sexism.
An example of the former would be, “Men are dangerous for women”. Of course not all men are dangerous, but it describes the experience of many women & how they have to navigate the world, to not be assaulted.
This one describes the dynamic of a relationship between individuals & assigns a thought pattern to one of those individuals, based on their gender.
Maybe I missed some nuances here & I would be glad to be enlightened, but this looks like plain sexism.
I would like to throw in the possibility, that the ball could accelerate downwards relative to the habitable part.