@phranck @inthehands @nurkiewicz at no point is this person's gender mentioned. Them is a placeholder for that and if you natively speak english I can guarantee that you've done this without thinking about it.
Additionally, they/them was originally a singular pronoun and was used as such even in Shakespeare's plays. Stop trying to high road people about a grammatical feature that has been part of english for more than 400 years.
Source: I'm literally a linguist. This was my job.