The war went on on for another 8 years. That isn’t in any sense of the word an accomplishment. It took 7 years to go from Kennedy announcement to the moon it took 8 years to stop a war with flower power.
Just because some poor 18 year olds were sad about being drafted (rightfully so) didn’t end the war. In fact now that you are mentioning this I wonder if there were more deaths involved. Maybe having less ground troops made bombing from airplanes more likely to occur which added to civilian deaths in Cambodia and Vietnam.
So what do people want to do? You want to try the strategy that didn’t end or stop from happening the Vietnam or Iraq war with the Middle East one or do you want to try something different? I imagine the same performative protests will continue because it really isn’t about peace, it is about being seen in a certain light.