For an example from today's news commentary: even some ardent feminists are surprised to learn that "Banksy" might be a woman, possibly because even if you know intellectually that English uses "he" as a neutral pronoun for a person of unknown gender, that's not always enough to prevent prose references to an unknown person as "he" from affecting you subliminally.

Or possibly because the prior for the gender of the kind of person who'd the kind of things Banksy does is heavily in favor of him being male.