What I meant was I’d hope people wouldnt call an air ambulance out for something as small as a minor broken leg or a deep cut – I’d drag myself down a hill with my mouth before calling an ambulance, there are people with more pressing needs – not whether or not the ambulance crew should/would call for air support when they got there. It may sound a bit macho and “im a hero” but I genuinely believe the emergency services should be used only in serious cases and if you are physically capable of getting yourself to hospital, despite pain, you should. Obviously there comes a question of how do you know how serious something is etc, but I think the majority of the time people massively over-estimate the damage they’ve done and the danger they’re in anyway, so the risk is small.
Yes I’ve stretchered people a few times, though not down MTB trails, certainly around fields and woods in various forms of outdoor/first aid/team building training.