That is exactly it. The guys who sit in their rooms in the shacks hating themselves and drinking every night, are loathe to be grouped with the sorry individuals in this documentary.
They have too much pride to be paid to ask for help, but the stigma of being categorised by their peers is what passes for "weak" I feel is the ultimate disincentive. In my experience, the people who are off work on PTSD pensions were not the best soldiers in the first place, and many times, we are better off without them.
There also seems to be a disproportionately high number of CSS types claiming stress, especially from tours like op apollo, where they never once set foot outside of the camp. This is justified by the blanket "stress affects everyone differently" statement. The guys at the pointy end who were shooting people, getting blown up by land mines, digging up bodies and picking up pieces of them are not getting PTSD (for the most part). They are the cooks, clerks and mechanics who are on TV saying what a rough go they had, when in reality, they worked 9 to 5 and slept in a tent for six months.
It is this stigma of going to a support group filled with overweight, older, largely female PTSD "sufferers" (my experience) that I think supresses many of the legitimate claims. A soldier who pushed himself physically and mentally for several years, in some cases has seen action, has perhaps watched his friends die (I'm making generic comments here, not personal experiences) has little in common with the clerk who could'nt sleep a couple of times because her Warrant yelled at her in the desert once. So he doe'snt go - because he does'nt see himself in any of the other people there, they are not privy to many of the more extreme events that we can encounter. Perhaps this is simply a manifestation of arrogance, but nevertheless, it happens.
In conclusion, I feel that those who are proud to be in the army, and proud of the job that they do are most likely to return to work, with or without PTSD, whether they seek help or not. I believe that the majority of people who leave the military on stress pensions are below average troops, simply looking for an easy and lucrative way out, and that this keeps many legitimate claims in the shadows, for fear of the association.