Both aerial culling and recreational hunting have their place.

When animal density becomes sufficient over an area as widespread as inland Australia, then a helicopter cull is wholly justified. Helicopters are phenominally expensive to operate, the type shown in the video is worth $1300-$1500 per hour as a basic rate.

When populations are more limited, or the terrain is unsuitable for helicopter use, recreational hunting are more suitable. What terrain is unsuitable? Not very much. Semi urban areas are a major no-no. Heavily forested country is more hazardous to work in and a lot of high & mid level cover makes it difficult to identify & cleanly kill the target. Basically there's much more country that can be culled effectively from the air, than not.

Basically helicopter culling stops when whoever's paying for it decides that their cost/benefit equation is going the wrong way.

Back on topic, once you accept taking a ride into a hunting area rather than walking in, the jump to spotting from the air and being dropped off for a shot is a short one. The Alaska rule seems like a sensible solution and may well become a broader recommendation in the ethics of hunting. Personally, even when driving, I try to arrive in time to make camp and sleep, but perhaps I'm just a wuss.....