There's plenty of art that I don't value the human element of at all. I don't think any of the Corporate Memphis blob people on tech sites or the designs on a billboard are "sacred," for instance, but they are unambiguously art. If you do these things with generative AI, I won't regret the loss of human involvement.
Art done to express something human will never go away as long as people feel a need to express themselves that way. Companies will hire fewer graphics designers, true, but I don't really give a fuck to be honest.