Outside of "them", those aren't even English words.
The guide also addresses misconceptions surrounding gender identity. It warns the community not to assume that “she/her/hers” are female pronouns, or that “he/him/his” are male.
According to standard usage forever, those are feminine and masculine pronouns. Just because an individual is confused about how they apply to that individual doesn't make any difference.
A small group of pinheads at universities and corporations have taken upon themselves to change a language spoken by hundreds of millions of people in order to accommodate the mental disorders of probably a fraction of a percent of the population. People need to push back on this and hard.
Yet more proof (as if more is needed) that Liberalism is a malignancy on all civil societies everywhere. What mis-educated nitwits.