I can't believe this discussion goes on over and over in threads
If you want to push your 8,9 10 + year old kid around in a stroller, whether it be for personal/medical/disability reasons, do it. You're not asking anyone else to push your kid. It's no one else's concern why your kid is in there, or that you will get tired from pushing, or that "it's crazy to push a kid that old around." Ignore people who say "my kids have been walking Disney since they were 2." They're kids are theirs, yours are yours. You know what's best for your and your kid.
If you are against the thought of a child that big being a stroller, then let your kid walk, but don't stare, point or comment at people who are pushing big kids in a stroller. It's none of your business. They're not asking you to push, it's not making you hotter or more tired and you do not know the reason the child is in the stroller. Many children have disabilities or health conditions that are not easily visible. Some parents just prefer their kids not to have to walk. That is their right.
So those with strollers mind your business and push your kid around. Those without, mind your business and go on your merry way.
People seem to be so concerned with what everyone else around them is doing at Disney. If you focus on where you are going, what you are doing, and enjoying your kids and family, you probably wouldn't notice so many big kids on strollers and everything else that seems to offend people at Disney.
Warning: Pass a comment to me anywhere while we're in WDW about my son being in a stroller and you'll get an earful. We put my son in a stroller for his safety and the safety and comfort of your family and others around us. We go to Disney to forget my son's issues for a week. Give me grief about my big kid being in stroller and you're going to get grief on how your comments are rude,ignorant and uncalled for. I can just as easily pass along the aggravation as I can the magic. Don't ruin the magic for us and I won't ruin it for you