Earlier quoted context omitted.
As someone who occasionally publishes in minor publications, I know editors pick headlines and don't always do the best job of reflecting the content. I think editor's goal is to get as many people to read it as possible so they might take some liberties.
Def do not blame the writer(s). Editors don't just change headlines. In technical stuff I've written using feminine pronouns I've had editors change to masculine. Editors will do anything they think makes a piece more ready for contemporary mass consumption.
Speaking as someone who has had to write headlines, there can be very strict guidelines we have to adhere to. Masculine is still the default neutral in professional English, in a number of places I've worked at.