ineffective our policy of bombing an agrarian society
“Ineffective” at what? The indiscriminate carnage that the US visited on SE Asia from the air was possibly the most effective mass-slaughter campaign ever perpetrated by a colonialist power - it was even more effective than the colonialist slaughter Germany visited on eastern Europe and the Soviet Union during WW2.
So no… as far as the tenets of colonialist warfare is concerned, it was perfectly effective.