I have started to look at Distance shooting in this way. Distance is one of only a number of variabes that make any shot more difficult. Other significant variables include:
Shooter experience
Shooter skill
Conditions to include Wind, Angle, Temp Changes, etc.
Equipment including rifes accuracy and ability to correct for things like distance and wind.
Probably the most importance variable is the animal. Size, Shape, Angle, Moving, Obstructions, and even what is or isn' behind it.
Frankly the easiest thing to account for in all these variables is drop at distance, especially today, and especially if you spend enough money to get a really good rifle.
The problem I find is that most people do little other than spend the money to get the long range hammer. I would say with good equip, and the requisite knowledge of how to account for the variables that can be accounted for(Dist, Angle, Temp, Size, Accuracy, and to a lesser extent wind), and you practice to account for these items in the real world, then shooting farther can be done where the animal will not sufferr unnecessarily. I doubt many of the newere LR shooters are really educated and experienced enough.
While I don't know, this video strikes me as someone who got excited about LR Hunting, bought this equipment, and possibly went out in search of a LR shot. I'm certainy okay with taking one in the right situation, but I wouldn't emphasize just that in your post/video, no more than I would shooting at a moving animal, one standing looking directly at me, or one that has another animal directly behind it.
I do believe way too many make blanket negatice statements that no shot over X yards is ethical. I think there are as many unethical shots based on the other variables as there are based soley on distance.
Let's all be accountable for taking ethical shots on animals that should have a low probability to lead to unnecessary suffering to the animals we hunt. Practice, know your equipment, and be experts with it, be it bow, rifle, muzzy, or shotgun.
