I think in general you are right. But appreciation for being outdoors comes in different flavours. In Sweden I think many children have been imprinted to appreciate friluftsliv through Skogsmulle, a kind of fairy tale cartoon character, usually an adult dressed up and taking small hikes with children in a nearby forest. While there, teaching kids to not throw trash in nature, about Allemansrätten and its freedoms and responsibilities.

Another could be the emphasis to learn many types of flower and tree species in biology in school. When I went to school I found that boring and useless but have later realized it being part of building a closer familiarity with the outdoors. Like ancestry in some ways. Perhaps the HN crowd could enlighten on this. I have heard that there is not as much emphasis on this abroad.

A third example, the focus on Orienteering as a sport in school. When I went to school, it was certainly the most emphasised of all the types of sports we learned and practised in gym class. The only one that got it's own day regularily. I think it was once a semester, reliable as clockwork.