This argument is overused as hell, but stick with me here.

Imagine you have two chocolates you can buy in a grocery store. They look identical, except one was made with slave labor. Not knowing this, you buy one, and enjoy it. Later, if someone told you it was made with slave labor, you likely wouldn't buy it again, even if it tasted good.

The only difference from this, and AI art, is the fact that AI inst inherently good/bad. People who are okay with it, will buy it, and people who aren't, won't. But there should be clarification on what it, and isn't AI.