How it can be possible when a patient wants to talk about traumatic experiense to a specialist, for the sake of getting rid of PTSR, but he afraids to talk abou

How it can be possible when a patient wants to talk about traumatic experiense to a specialist, for the sake of getting rid of PTSR, but he afraids to talk about it because of... what may happen? What kind of pain may block even talking about it? I have built an idea while reading those PTSR-witnessers that mobilization for males is an analog of rape for females and the pain is not from killing and seeing kills but from being enslaved. I have a lot of friends who use to kill Russians in Russo-Ukrainian war, or use to be a medic, and everybody is totally happy to discuss at least some analytical problems (equipment, strategy, caveats, how to avoid being killed in combat, etc). I am just trying not to be jerk and listen more than talk to them and those people even do not claim they heavily suffer from anything like PTSR. What kind of questions were asked to patients and participants of what military group were the patients? If my theory is wrong, then the questions is always about killing and seeing massacre. I really want to know criterions of being chosen to mdma-assisted therapy instead of other antidepressant.