[2] Keiles grew up in Doylestown, Pennsylvania, where he attended Central Bucks High School West.
[7] The project criticized Seventeen for promoting a limited conception of adolescent femininity; the project quickly drew coverage from feminist blogs[8] as well as national outlets, including NPR's All Things Considered and CBC's Q, among others.
[13] In 2022, he began working on a journalistic book about nonbinary identity in American, to be published by Farrar, Straus & Giroux in 2025.
[14] On November 3, 2023, Keiles announced that they were leaving the NYT Magazine, after having signed with Jazmine Hughes the Writers Against the War on Gaza letter, an open letter accusing Israel of attempting to "conduct genocide" in the course of the 2023 Israel-Hamas War.
The newspaper said that Keiles' actions were a "violation of The Times’s policy on public protest".