That is unmitigated, blinder-driven nonsense.
Art can be an expression of joy; of nothing; of interest; of form; of function... and it can still be art, even *great* art, no matter if some particular critic or consumer finds it unworthy, or not. It can be found in paintings, weapons, carved shells, code, fiction, sexuality, clothing, history, religion, philosophy, architecture, pottery, bonsai, the manner of one's death, kitchen appliances, on stage, in music... and a whole lot of other places... and all of it can arise with -- or without -- struggle. Struggle is not a required foundation, it's just a circumstance that in some part gives rise to some artworks, as can be said for virtually any facet of the experience of life, of the nature of reality, of the nature of fantasy.
Your view of art is so narrow I'm surprised you even admit there is any.
And *I* am a bloody Philistine, lol.