Rule A.7: Bias in Writing Mechanics
To retain credibility, TLR follows CMOS 5.251 and uses language that avoids sexist or other conscious or subconscious prejudices. As Bryan Garner writes in CMOS 5.254:
“What you should strive for—if you want readers to focus on your ideas and not on the political subtext—is a style that doesn’t even hint at the issue. So unless you’re involved in a debate about, for example, sexism, you’ll probably want a style, on the one hand, that no reasonable person could call sexist and, on the other hand, that never suggests you’re contorting your language to be nonsexist.”
See CMOS 5.255 for tips and techniques to achieve gender neutrality in writing.