Reading that wiki page, it sounds like he's on his way to a long stint in prison, or worse. Wouldn't be surprised if he gets black-bagged now that he's attacking critical national infrastructure and encouraging others to do so.
If they truly don't care to perceive a gender then a 50 / 50 pick. When I look at it's picture I honestly couldn't tell you if I perceive more male or female so I would've done same as op and picked one randomly and then for consistency not change it, even if some unrelated party tried to confuse things by making me change it.