Could only watch the first part of the video, as the commentator was remarkably tendentious and a bit loose with the anecdotal evidence, cherry picking, and straw man arguments.
For one thing, the whole notion that a strict divide exists between modern and classical (realism) art was inflated. Don't get me wrong, maybe in the artistic academic quarters, debates rage, but among the hoi polloi, lines of interests are far more porous or vague.
Classical art has not been publicly ostracized, as it is abundantly represented in museums. If anything, over the last four or so decades of my life, it's been modern art, particularly abstract, that has drawn ridicule, not realism. To be sure, some of the criticism is legitimate, but I can't account for curator tastes, nor the pretension and politics that permeate much of the art world. Still, these longstanding problems do not negate the overarching value of modern art.
Not sure where Impressionism falls into his scheme of things, but it's usually viewed as more on the modern than on the classical side, yet despite this, numerous people on this planet find it quite "beautiful." He seemed to play on extremes a bit.
I like some of Picasso's work, even if it skirts the conventional definition of beauty. In fact, many of the modern paintings displayed to somehow expose their fallacy were in fact pretty stunning as far as I was concerned. People like different things, and I certainly hope no one is trying to impose some totalitarian notion of what proper art should be.
Which brings up the issue of technique. What's good is good, irrespective of how it got there. I'd rather listen to the questionably talented New York Dolls than ELP, even though in terms of craft and musicianship, ELP was far superior. ELP was also far more pretentious…you see, complexity can often be more self-indulgent than simplicity.
It's not a matter if the subject is a shadow on the sidewalk or a mountain in the distance. A trillion photos taken every second across the globe these days; everything has been photographed. Yet, I still see great photos of flowers or even weddings (weddings of strangers about whom I care little). So I have to question why do I like Adams when I have little interest in landscape, or Nick Brandt when my interest in wildlife is equally subdued.
There are, for me, elusive issues of art involved in these enquiries, and yes, while a grammar exists, there is another transformational component that pushes these works above the norm, irrespective of the medium used, irrespective of the subject matter. It's not a case of trashing all rules for its own sake, after all, Adam's and Brandt's photos are fairly traditional, and I agree, we don't need to grab for extremes to make a point.
At this stage, I'm not going to get into when photography as a whole becomes art, because the semantic debate that will invariably ensue detracts from the importance of the aesthetic. The aesthetic is the art, even if the photograph aims to be art or not.
Yes, there are many inherently beautiful objects in the world---the art in front of our faces---but, assuming we can even detect them (a skill within itself), capturing it with literal intent and technical perfection does not always guarantee successful rendering, just as applying enhancement or the abstract does not always connote pretentiousness. True, creativity can of course coexists with the traditional, but likewise, thought provoking is not mutually exclusive from visual captivation. There is room for all in photography, and dismissing one to defend another just digs up a lot of hypocrisy.
The rules exist, in part, to help underpin and expand the vision, whereby, after time, they operate subconsciously; they don't dictate, they don't intrude, they merely, perhaps in an engrained fashion, facilitate interpretation, even if such interpretation flout these very rules.