The mystery of the preferred pronouns injection

If have not assigned a “Display name” to my @davel@lemmy.ml account, and as expected—at least on lemmy.ml—it displays as “@davel”. However, on every other instance it displays as “davel [he/him] (@davel@lemmy.ml)” (on Hexbear.net it looks slightly different: “davel [he/him]@lemmy.ml”)....