(NOTE FROM TIM BAYLY: A large part of this post has been removed. A young man objected that I was replacing one idolatry with my own more sophisticated one, and I thought it best to pull the post rather than allow readers to conclude that I am promoting idolatry.)
Here's an interesting explanation of the worship of artists spreading through the PCA by way of Covenant, MNA, and Redeemer clones. George Bernard Shaw points out that this worship has its origin in artless homes and childhoods...
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"But there are more dangerous influences than ragtimes waiting for people brought up in ignorance of fine art. Nothing is more pitiably ridiculous than the wild worship of artists by those who have never been seasoned in youth to the enchantments of art. Tenors and prima donnas, pianists and violinists, actors and actresses enjoy powers of seduction which in the middle ages would have exposed them to the risk of being burnt for sorcery. But as they exercise this power by singing, playing, and acting, no great harm is done except perhaps to themselves. Far graver are the powers enjoyed by brilliant persons who are also connoisseurs in art. The influence they can exercise on young people who have been brought up in the darkness and wretchedness of a home without art, and in whom a natural bent towards art has always been baffled and snubbed, is incredible to those who have not witnessed and understood it. He (or she) who reveals the world of art to them opens heaven to them. They become satellites, disciples, worshippers of the apostle. Now the apostle may be a voluptuary without much conscience. Nature may have given him enough virtue to suffice in a reasonable environment. But this allowance may not be enough to defend him against the temptation and demoralization of finding himself a little god on the strength of what ought to be a quite ordinary culture. He may find adorers in all directions in our uncultivated society among people of stronger character than himself, not one of whom, if they had been artistically educated, would have had anything to learn from him or regarded him as in any way extraordinary apart from his actual achievements as an artist. Tartuffe is not always a priest. Indeed he is not always a rascal: he is often a weak man absurdly credited with omniscience and perfection, and taking unfair advantages only because they are offered to him and he is too weak to refuse. Give everyone his culture, and no one will offer him more than his due.
"In thus delivering our children from the idolatry of the artist, we shall not destroy for them the enchantment of art: on the contrary, we shall teach them to demand art everywhere as a condition attainable by cultivating the body, mind, and heart. Art, said Morris, is the expression of pleasure in work. And certainly, when work is made detestable by slavery, there is no art. It is only when learning is made a slavery by tyrannical teachers that art becomes loathsome to the pupil."