What I would say is that star awards/stickers/special mentions do often seem to work more like this in primary schools - especially at KS1. And yes, our primary has special mentions of which every child in the school must get two in an academic year, and they can be for anything from 'consistently powerful writing' to 'making the most of the learning opportunities on a school trip'. And yes, that can seem a bit pointless, if your child is generally well-behaved or bright.
I would also say though that this changes in secondary. I don't see badly behaved children getting stickers and awards - although I do see them getting time and attention devoted to them to get them the best results of which they are capable, and I think this is good. But I also see good behaviour and academic achievement rewarded as well.
One thing I noticed at year 7, was that instead of 'we have chosen 6 children who we think will really enjoy and get the most out of a science workshop' type language to cloak G&T trips, the langauage becomes a lot more direct: this is a G&T activity and your kid is on it'.
I do think that at primary the focus is, and should be, different. And I think that the best and right thing to do is to explain to the 'good' child who doesn't get the stickers is that you, and their teacher, do appreciate them but that the stickers/awards are for different things.