Please don't make that presumption. Many claimed to be Vietnam Veterans who were phonies that were part of the anti-war crowd looney lefties. It is happening again now. The book Stolen Valor provides documentation that many that claimed to be Vietnam Veterans supporting the left never served in the military at all or never served in Vietnam. You can also do a search on Winter Soldier for more about the phonies that were used for political purposes. The left did not just recently become devious.
There’s a scumbag Democrat senator, Tom Harkin, who got caught being a fake Vietnam vet.
The geniuses from Iowa keep re-electing him anyway.
I didn't make the presumption. That was a quote from a 2004 FR article. I provided a link to it. In any case, you make a good point.