Sure, there were some who went to Vietnam who believed in the propaganda about the war. Most however, were poor, unable to get a draft deferment, and they didn't want to be there. The antiwar protests were huge, the hippie movement was a thing (Don't believe anyone over 30), and burning draft cards was a thing. Most of those who died in Vietnam were simply unlucky and I contend there is not that much psychological difference between those that died in that god-forsaken country and those that were fortunate enough to survive and return. In contrast, I observe huge differences between those today who drink the Kool-Aid about the jabs and believe the government versus those that do not. You could possibly draw a parallel between Vietnam draft dodgers who escaped to Canada and the rebels of today who refuse the mandates, but even that's a stretch.