In light of the concerns younger military parents have expressed, there are three important distinctions to be made between what the kids in the article said and what a lot of parents seem to have heard.
1) Any distaste the military child feels about the question of "from" isn't because of the question itself. It's because of the number of times they've come across a questioner who wouldn't accept their answer.
Several commenters on the article (here and on other sites where it was reposted) have said, "What's the big deal? Just say 'X' and be done with it." This sounds good in theory and in fact sometimes it does work, but as the kids quoted in the article pointed out, their answer is rarely accepted at face value. This is why they don't like the question: A lot of people won't take "X" for an answer, especially if "X"="everywhere." As the parent of a younger child, you are in the perfect position to teach others that "X," no matter what it equals, is a valid answer.
2) You're right: Your childhood isn't your child's. And vice versa. I was raised in one town with one family. My children were raised in many towns with one family – ours. This made it all the more important to value our family unit with support, strength, and encouragement. I had a few friends growing up and I still keep in touch with only one of them. It's not uncommon for kids who made friends at Camp Lejeune, North Carolina to see each other again in Okinawa, Japan. Thanks to Facebook, a lot of children have reconnected virtually. "It's a small world" has a special meaning in the military community, but don't let this force you into a claustrophobic approach to raising your children.
The myth that military children lose out on real childhoods is just that: a myth. It assumes an incredibly strict definition of childhood. The military lifestyle does not itself detract from the quality of childhood. That idea is adult-centric and should not be conveyed to the child – not by the parent or anyone in the parent's family or circle of civilian friends. Parents set the stage for how their child will feel about being a military kid. Being a military child does have its disadvantages, but having a parent who feels bad for them shouldn't be one of them.
Shawn: "I actually felt bad for my kids knowing they were going to pretty much grow up in one town their whole lives. Of course, I envied them at the same time. I found myself searching out opportunities to expose to them to what I experienced: vacations, friends from other cultures, even food and entertainment. Military parents need to do this, too. Carry along those mementos from their 'home'. Learn how to make Grandpa's jambalaya or Aunt Margie's scones and do it faithfully. Keep telling the darn stories even after your kids realize you have a dubious relationship with the truth when telling them."