“iNaturalist is a lot of different things, but at it’s core, iNaturalist is an online social network of people sharing biodiversity information to help each other learn about nature…However, despite the fact that iNat can be a bit technical and seems scientific, our primary goal in operating iNaturalist is to connect people to nature…It’s NOT a science project.”
https://www.inaturalist.org/pages/what+is+it
iNat is a science resource, but its main goal is connecting people with nature. If youth can help achieve this goal, I don’t see why they should be limited.