Mary-Claire Van Leunen writes about the use of pronouns.

“My expository style relies heavily on the exemplary singular, and the construction “everybody … his” therefore comes out frequently. This “his” is generic, not gendered. “His or her” becomes clumsy with repetition and suggests that “his” alone elsewhere is masculine, which it isn’t. “Her” alone draws attention to itself and distracts from the topic at hand.

“Their” solves the problem neatly but substitutes another. “Ter” is bolder than I am ready for. “One’s” defeats the purpose of the construction, which is meant to be vivid and particular. “Its” is too harsh for a joke.

Rather than play hob with the language, we feminists might adopt the position of pitying men for being forced to share their pronouns around.”

— Mary-Claire Van Leunen from A Handbook for Scholars

Hah! I love that passage!