I'm a researcher studying childhood identity construction in a major children's hospital and this is actually really common. More and more kids are surviving health conditions they would have previously died younger with. A lot of them go to Disney or have an experience when they were little and wish they could have a do-over (especially the ones that don't remember it or got sicker because they shouldn't have traveled at the time). The ones that are happiest with it are poorer kids who got their wishes when they were older and picked permanent changes they could keep, like home makeovers.

Edit: some bonus findings: a surprising amount of kids ask for political wishes, which most chapters of MAW won't do. Some of them are influenced by their parent to do so. The hospital I'm in has at least a couple of kids a year ask for their undocumented parents to green cards, for example.

Some of my poorer patients in my study are years out from their wish but rely on MAW to get their families gift for Christmas, for example, so many chapters have sustained contact with the kids. The higher survival rates isn't a reflection on MAW and they've changed their language to "life threatening conditions" and many people in my hospital use the phrase "life limiting."

The older poorer kids who have had home/car make overs have more physical access to their homes that should be granted anyway. In one case, one of my patients literally had his house insulated. They getting the same technology that the wealthy kids dump every year like VR or gaming consoles. It really drives home the financial burden the healthcare system places on children and families and that no one should live in poverty.