'He' is no longer the default pronoun. Many authors of finance related books will make a brief note in the preface that when a generic person is involved, he (the author) will use the female pronoun. I don't believe the rules we had 40 years ago to stay with male pronouns still applies.
Side note - on the school public announcement system, "whoever lost their jacket...." as I was sitting in my high school English class, I remarked on the plural pronoun and was told it was accepted as an attempt to be gender neutral. It was an all boys school.