Also even if drafted after registration it was avoidable. You can be a conscientious objector. You can leave the country bc. in the us we don't check your Id when you leave, unlike China. You could go to Canada. And we don't draft people anymore but we do register them. There's a tiny tinge of comparison but it's not the same as holding your kids hostage if you are on the political outs.
During the Vietnam war, you could "go to Canada" basically only because Pierre Trudeau instructed the border guard to allow Americans who seemed like they might be draft dodgers to immigrate illegally. No guarantees there will be another arrangement like that next time.
The draft isn't coming back and there has been no instance of it coming back in any capacity in over 50 years. So no glass houses here, thanks.