So it’s completely subjective? What might be fine art to me might not be fine art to you, for instance. Correct?
No, it’s not completely subjective, any more than classical music or great literature is. You will encounter disagreement among knowledgeable critics regarding anything, which is where museum curators and art collectors come in. They can and do vote with their feet and put their money where their mouth is. Perhaps this is what is happening with Norman Rockwell, or perhaps it’s all that stimulus money sloshing around Wall Street and they’ve run out of places to put it and things to buy? Time will tell.