There was one important difference in the case of the draft-dodgers of the Vietnam era- they had no choice at all in the matter. These guys, OTOH, were volunteers who knew (or should have known) that they signed a contract to kill people and break things when so ordered.
And yes, I do oppose conscription- any society that is unable to motivate enough people to defend it is a society that's hardly worth defending.
Conscription isn't just about defending the country. It is about having a stake in America. I don't agree that everyone should be forced into the military, there are other ways of serving the country. However, I do believe that every male should serve some form of service to the country. On that point, we'll just have to agree to disagree. I suspect that both our minds are pretty firmly made up on this point.
Lots of different names are attached to mandatory service, most of which are intentionally negative. In many countries, conscription consists of a miltray truck driving through different neighborhoods and picking young men of draft age up and taking them to a processing center. At the processing center, they are given a cursory medical exam, fitted for uniforms and sent to whatever military base they will be assigned to. When the conscript has an opportunity, he is allowed to call his family and tell them not to hold dinner, he won't be home for awhile.
If our draft service worked that way, we would be in compete agreement. But the American system of selective service gives draft-age men ample opportunity to show why they shouldn't have to serve, and provides a number of different exemptions.
The fact is that mandatory conscription may not be the most fun thing you will do in your life but, IMO, it also isn't the worst. And, as I noted previously, I don't believe that the military should be the only form of mandatory service, but I do believe that there should be some form of mandatory service. Once you have provided service to your country, your perspectives change about things . . . . . . sometimes.