Honestly, they're not wrong, it's just that most people don't understand that aspect of why artists are so against AI.

Art is also a conversation and a mirror. Entire artistic movements have been dedicated to creating pieces intended to evoke specific feelings in viewers.

The story of the series of paintings titled Who's Afraid of Red, Yellow and Blue and the attacks on them are a great example of all of the points that I've talked about. As Wikipedia says:

Barnett Newman started the first painting in the series without a preconceived notion of the subject or end result; he only wanted it to be different from what he had done until then, and to be asymmetrical. But after having painted the canvas red, he was confronted with the fact that only the other primary colors yellow and blue would work with it; this led to an inherent confrontation with the works of De Stijl and especially Piet Mondrian, who had in the opinion of Newman turned the combination of the three colors into a didactic idea instead of a means of expression in freedom.

Of the four paintings in the series, two would be attacked with knives, with a second failed attempt on one of them resulting in an attack on another of Newman's paintings instead. All because of some big canvases with the three primary colors painted on them in simple stripes. The first painting to be attacked is literally a red canvas with a single stripe of blue on one end.