In case anyone wants the real context for Mordred, her character arc in Fate/Apocrypha is about her not wanting to be a woman because she wants to take over her dad's position as king which women can't do. (She doesn't actually know that her 'dad' is a woman too) But at the end of her character arc she comes to terms with her situation and chills out about wanting to overthrow her dad. In the mobile game she does often play male roles in comedy events but her ingame gender designation is still female and her valentine's event is in the female section too.
The mobile game has a category for genderless characters, who are unaffected by gendered skills and have a valentine's cutscene in the male and female section each, but I don't believe the devs buy into SJW shit. Most of these genderless characters are for example: a shapeshifting clay person (Enkidu), a dude who traded in his human body for a mercury body with no genitals (Qin shi huang), someone who can magically be percieved as male or female (D'eon), someone who embodies FGO original sex swapped versions of themselves and the more historically accurate male version within the same character (Avenger nobunaga), and a comedy otokonoko/trap character who gets put into a steel drum hot bath instead of a gendered hot spring but who also refers to himself as a man of the sea and who the game referred to as a prince once. (Astolfo)