Fire department charges for ambulance rides in Truckee. Ask me how I know.
There are certainly inconsistencies. If we want SAR to be free, how about ambulance rides, how about all medical care. We dyon't charge for the FD and PD.
The analogy that makes sense is CG rescue, at least for recreational boating. I would have no problem charging for that. The analogy with a lost kid is absurd. And the writer doesn't know how FEMA works. But if we want to use that analogy--I pay for flood insurance. If you live in a flood zone you should have it. You don't get a new house if you don't have insurance. In Europe it's routine for people to be charged and for people to have rescue insurance. Amyone who's skied in Europe knows it's cheap.
As far as the argument that paying will keep people from calling for help, I would counter that knowing you can get a free rescue makes people take more chances. Which is more dangerous? I suspect in most cases the cost doesn't enter into the decision. People call fast because they're hurting and frightened. When people don't it's because they value their self reliance.
Society ultimately decides who gets free service (fire, police) and who doesn't (occasionally a hiker, sker, climber). What ever the public consensus is I'm fine with. What I have a problem with is the attitude.