Biggest risk by far is injury. Simple injuries you'd just get a taxi to hospital over, or see a local doctor. A broken ankle.

Triangle of death is simple injury, poor coms/ no signal, can't rest in place.

So you often see this where day hikers are almost totally unprepared to rest in place for several days, no water, no tent, no sleeping bag, no camp equipment. Anyone else could just sit around in a tent for a few days until a rescue party turns up. And inexperienced hikers may fail to recognise the contextual seriousness of a simple injury, whereas the risk of something like a bear is unique to /out/. Risks they encounter day to day, but which are not serious in day to day life, become serious /out/ and sneak up on people.

Leading inexperienced hikers the hardest part is trying to stop them doing things which are "easy" and "safe" like climbing trees. Because 30 clicks from a main road suffering a fractured wrist, dislocated shoulder, knee, broken ankle, whatever is a much bigger deal then in the playground at home.