Jake does have PTSD and I think the movies do a great job of portraying it realistically. PTSD doesn't always manifest in flashbacks or strong reactions to gunfire, it can also manifest in depression, anxiety, and dissociation, all of which Jake deals with, especially in A2!
I need there to be more depth in avatar cause what do you mean Jake is a war veteran who has been shot but doesn’t have PTSD , and like even if he has it why don’t they show it in the movies like it’s a huge part of his life and they just didn’t show it