If it's just a preference, then why mention the trauma at all? What bearing does it have, if not to try to give your "preference" the weight of a harm to justify getting your way when otherwise there would be no reason you should get your way?
"I can't control my reaction to someone else's body because trauma."
has an awful lot in common with "I can't control my reaction to someone else's body because male biology."
This trauma argument is the same as dudes that claim breastfeeding is vulgar and intolerable because they just can't be expected to control themselves in the presense of an uncovered breast.
And of course, this is also not just a preference. It's an attempt to justify something by having a stronger argument than a mere preference, namely a trauma.
But let's just pretend you didn't try to wield trauma as a club. It's bad faith argument forgiveness day.
No few people have a "preference" that babies should not exist on planes or in restaurants because they don't like the sound of them crying or their smells.
All the men of whole countries have a preference that women just shouldn't exist anywhere out in public.
And of course the breastfeeding already mentioned.
I would call all of those invalid but hey I'm just a "cowboy".