I've seen 彼 and even sometimes 彼氏 described in several dictionaries as a pronoun that can refer to a person of any gender, while 彼女 is explicitly female. However in the wild ive never seen a woman referred to with 彼, but its also possible i dont see it, just as a second-language speaker of English may not realize "his" in "Every man must choose his fate" can refer to a person of any gender as it's a very subtle distinction.
So my question is this — when in modern day practice can 彼 refer to a person of either gender?