They might not know that those assets are AI-generated. It's easy to not know if you don't have this stuff (somehow) constantly shoved into your face.
I had a sticker on my water bottle from a brewery for several days. Just last night did I realize that it was completely AI-generated. The design was just text. Anyone could've made it with any other application, and yet, they chose to use AI to do it. The font was a typical font used by AI, and the hero text had low-res dots on it, a tell-tale for one-shot AI art. I threw it away.