Stanwell
Please read Centaurus' post #1 again.
In that, he asked that, if we must be gender-neutral, what is wrong with simply, "the pilot"?
Please pay attention.
Please read the report. It is full of references to "the pilot". eg:
As the aircraft climbed towards the planned cruising altitude of 9,000 ft, the pilot began to feel light-headed, dizzy and short of breath. The pilot levelled the aircraft at 9,000 ft and engaged the autopilot. They then attempted to identify a reason for the symptoms, selected air conditioning off, opened a fresh air vent and ate a snack. No reason for the symptoms could be identified. As the flight continued, the symptoms intensified, the pilot felt tingling in their hands and fingers, and large head movements caused severe nausea.