of course, but America didn't go through the post-vietnam weird patriotic faze until Rambo's macho antics. It was Rambo that created that wierd macho, patriotic shit that lasted for a good while and spawned a lot of what looked like stupid copycat movies, I think Norris had a series of them which I never saw. Platoon was Stone's direct rebuttal to Stallone's Rambo 2. First Blood was the better Rambo movie and it didn't rely on manipulating the patriotism of stupid audiences to make it good. And lets be honest, a ton of these artistic works were ambiguous. Bruce Springsteen was accused of doing a Rambo thing with a guitar, even getting wrapped in a flag at some concerts but the song itself (Born In The USA) was not patriotic, it was a song about getting fucked by the government but the fist pumping in the vid as well as music that didn't fit the lyrics obsfucated the message. In the end, most people do things for money and power so they're all guilty of being insincere to some degree but Stone was probably the most sincere and the most straight forward as well as probably having the best of the entire lot, including Deer Hunter and Apocolypse which were real cinema and not the low brow bull that came later.
I can't really say too much for most of these films because they looked so stupid from the start that I never watched most of them. I think Full Metal Jacket was decent and doesn't go into the category but most of them were just insipid trash for stupid people.