No, I'm not using it incorrectly, I'm just not concerned with the legal definition as I'm not a lawyer or anyone tied up in this mess.
If you do a thing, and it takes time and skill to do it, then someone copies it, they stole your labor.
Saying they "copied his style", the style he spent a lifetime crafting, then trying to say they didn't benefit, at no cost, to the labor he put into crafting that style because "well actually, the law says..." is a bad argument as it tries to minimize what they did.
If their product could not exist without his labor, and they did not pay him for that labor, they stole his labor.
For, like, the fourth time in this thread: were this ethical, they would have asked for permission, they didn't.