Point number two: "encouraging a little more responsibility" is a totally ridiculous statement if you think about it for about 20 seconds. I'm sure that getting hurt, breaking bones, getting lost, DYING, are not adequately discouraging, but add a 1000$ bill to it and that would be enough to tip the balance? Noone consciously sets out with the helo in their backup plan.
Sure, no one plans on needing a rescue. But there are plenty of people who have initiated one when it wasn't absolutely necessary. The knowledge that they can be charged might cause people to think a bit harder about what they can do to avoid it.
Things like getting hurt (minor injuries) or lost will happen, but if you're prepared, there are ways to help yourself instead of relying on others who don't have all the information on your condition and may bring in way more help than needed.