Robots presumably don't have a need to be gendered, at least in most portrayal of robots I've seen.
The creator refered to it with a male pronouns, probably because their vision of the character have masculine features. That doesn't necessarily mean the character itself is male gendered.
Yeah, gender being a social construct doesn't mean everyone everywhere just suddenly becomes genderless androgynous blobs, we still express our gender in the ways we want to express them.
For example High heels, sheer leggings, long curly hair, and a flowy skirt and poofy blouse adorned with shiny bits. Am I describing the style dress of women today or the style of dress of 17th century French kings?