which could be said for just about any thing. Some kids are born with great IQ's isn't that also just dumb luck?
My dh worked almost 25 years without a sick day then boom, acute myeloid cancer. He got awards at 5, 10 and 15 years for perfect attendance.
So you would question what they are rewarding, do you also question the folks who have admitted to encouraging their kids to miss school "just because"? Why is this any less "dumb"?
You can be born with a high IQ, and while that might make getting good grades easier, you still have to do the work to get the grade. I've got a nephew with an off the charts high IQ who doesn't do particularly well in school because he doesn't like completing assignments and finds school sort of boring. So, there is still some effort on the child's part to get the grades.
Sports are the same. Some kids are naturally more athletic than others, but they still have to apply themselves, work out, go to practice. While their abilities might predispose them to be the track star, it's far from a given.
My daughter is a musician. She's got the gift for it, according to every teacher she's ever had. But still, she has to put in hours of practice. It's not like she can just pick up her violin and have instantly mastered difficult pieces.
In my house, if my kids aren't sick, they go to school, end of story. It's not up to them to decide, it's up to me. So, if they have perfect attendance, it's plain dumb luck they didn't happen to get sick. It doesn't require any particular effort on their parts.
If other people want to keep their kids home "just because," while I don't do it, that's up to them.