Léa, I see that in the section Ilkka quoted you were using it in the plural. However Ilkka is exactly right; despite "they" being technically plural, using it for somebody of undetermined gender has been in the mainstream since long before inclusive language. "Someone left *their* book, there's no name and I don't know who to call."
The AP and Chicago style guides, hardly reckless proponents of any progressive vanguard, endorse this usage, though they recommend working around it if possible ("Somebody left *a* book"). However they do unequivocally endorse using it for somebody who declares "they" to be their pronoun (though for now that may not have much bearing on the manual). On Sun, Jun 6, 2021, 07:49 Léa Gris <lea.g...@noiraude.net> wrote: > Le 06/06/2021 à 11:33, Ilkka Virta écrivait : > > In fact, that generic 'they' is so common and accepted, that you just > used > > it yourself > > in the part I quoted above. > > Either you're acting in bad faith, or you're so confused by your > gender-neutral delusion that you don't remember that in normal people's > grammar, "they" is a plural pronoun. > > -- > Léa Gris > > >