Definitely, but internal contradictions in the US, harnessed by the American anti-war movement, made the Viet Cong's attritional warfare tactics actually effective. The whole point wasn't to beat the US army in open combat, we saw the Tet offensive, that was a tactical defeat for the NVA but it was a strategic victory because it drastically lowered morale and empowered the anti-war movement at home. But for that strategy to work that anti-war movement had to exist and the contradictions of an overconfident and overextended US empire had to exist as well.