You do know what the T in PTSD stands for ?
I wouldn't dispute for a moment that contracting COVID-19, or losing a loved one or friend to the pandemic, is indeed traumatic. But only a very small percentage of people who are currently declining to fly are in that situation.
The overwhelming majority of the passengers who are, for the time being, turning their backs on the industry are simply exhibiting PTS - Prudent Traveller Syndrome.
Labelling them as trauma sufferers is both lazy and unhelpful.