There is no consistency in, one one hand, being able to differentiate between categories such as 'Cis' and 'Transwoman' ( as he does) - but then claiming that there is no differentiation between them, for a start.
You cannot claim a trans status whilst also claiming the biological sex of your preference. You wouldn't be trans if you were already female. 'Trans' differentiates you from the start.
He is consistent in being illogical though. What NC needs to demonstrate is thgat he knows and understands full well why SP felt the way she did - and that is because he is male/trans. NC also needs to demonstrate that rather than SP being the bully - it is he who was seeking to control and dominate the whole situation.