I respect the honesty of people who openly list LLMs as contributors. Hiding the use of LLMs is unethical, and the product of such I'll definitely won't use, nor suggest to others.

Depending on the use, something that an LLM contributed to could still be art, as long as the human makes sure their intent is preserved. I'd say the likelihood of being art is directly proportional to the involvement of the human. Something vibe coded with minimal effort, even if attractive, is not art, just coincidence.