Exactly. These are, of course, people who are not dedicated skiers. Similarly, when someone says "I ski blacks" I know right off that they are much closer to a beginner than an expert. Not that I care. But most dedicated skiers (outside of dedicated racer types) just ski "terrain", not "runs". Sure, ski areas and will name a chute or a bowl, for reference. But the categorization a ski area will put to that particular place means little to most of those dedicated skiers.
I am going out on a limb here to say that the well known fact that ski areas choose difficulty levels relative to their own mountain is simply problematic and flat out dangerous to the general public. I would like to see someone try the Palisades at Squaw because they are "single black", after skiing a tiny little "black" somewhere else. Right. Squaw only has green, blue and black.
I would love for the PSIA (and other institutions in other countries) to provide uniform difficulty ranking to the different ski areas. Make it a certification. It only matters to people who are beginning, but it would keep slopes safer.
Setting goals and achieving them is a great experience in life. Doing this is ubiquitous and healthy. No one is immune to this "type of thinking". What kind of goals can you set in skiing? For a beginner skier, a black diamond is intimidating, fantastic, scary, and seemingly impossible, yet they enviously see people rip down them no problem. It's human nature to say, "I want to do that." It's a clear separator between beginners and more advanced skiers. It's an obvious way to rank skiers and establish goals. After they get down that black diamond, what's the next goal? Double black. Then, it could be some of the toughest double blacks without falling. Then, many start over and try to do it all with a particular form. Most likely if you're not adept at setting goals you're no good, because it takes effort working to accomplish goals that drives someone to make necessary changes to push beyond a plateau.
There is a Zen philosophy that attempts to change this kind of thinking, but I'm not a subscriber. One thing I've noticed is that Zen philosophers are often condescending of that kid that wants to reach the top of the mountain. It's almost as if Zen has become a contradiction as the attempts to strip away the motivations for setting goals, becomes in itself a goal that starts interfering with the natural and enjoyable process of accomplishment by oneself and those around them.
So, yes of course it's obvious that getting down a black or double black diamond is not the peak accomplishment in skiing, but yet it should also be obvious that getting down a black diamond is a significant accomplishment for a beginner skier and thus would be a natural separation for skiers around that level. Someone recognizing that they are beyond the goal of getting down a black, and feeling the need to point that out in reference to this thread is the same kind of thinking that leads beginners to talk about what they ski. It's all based around ego, goals, and accomplishment. The only difference is the level of accomplishment. So, this video is a classic example of setting goals for those around a particular level in skiing.