Yes and languages evolve. I also worry that your same sort of historial logic can be used in favor of preserving gendered language and traditional gender definitions that is contrary to the goals here.
I’m arguing for a standard usage, he/her for everyone covers always having a singular standardized pronoun so that they/them can be used as plural pronouns without the potential confusion that you may be talking about more than one person in the same literal contextual frame of a discussion. Preciseness of language improves the quality of communication.
Even in that example, and perhaps the modern English translation is just incorrect in its wording, “Each man hurried… til they drew near” is still a plural representative form of usage, as ‘each man’ is an implied amount of more than a singular man.
To say “Each man hurried… til he drew near… where William and his darling were lying together” creates a confusion of singular subject and does not work since ‘each man’ and ‘they’ represents more than a single self identifying entity.