I want to confront veterans I think are lying about their service or PTSD based on my own experiences
What makes you think that they are lying?
I am pretty aware there have been a lot of fakers.
I think that people deal with it in their own way. You should not accuse someone about lying about PTSD just because they do not behave like you.
Why not, they are trying to take taxpayer money. They are all a bunch of losers.
PTSD is very serious. It is hard for a solider who had to protect himself and his buddies with a gun from being killed from just turning it off. And flashing lights or pops could trigger a memory.