Boythrob recently posted this tour announcement poster, and many people were in the comments roasting them for using AI. That sentiment changed when Boythrob amended the post crediting Paul Shipper as the artist (two reference works of his provided), and claiming that current AI models were trained on his posters, so that explains why AI movie posters would look like a real Paul Shipper poster.
There are some peculiarities with the poster though that leave me unconvinced there was no AI used.
1: The American flag is covering (slightly) text about meet and greet dates, which a human artist would likely understand not to cover given its importance.
2: While the quality does make it hard to tell (slightly easier to see in the original Instagram post), the four singers are all wearing the same footwear, but they seem to have different numbers of lacing, between one to two, despite four eyelets on each side.
3: The ribbon that the text "Great American Road Trip" is on has an American flag design. But there are two large stars, one on each side, surrounded by smaller stars, which is not what the actual flag looks like.
4: The last singer either does not have five fingers, or elected to hold the hat between his ring and middle finger. While I am not an expert in yee-haw, I usually hold hats between my thumb and index finger.
5: The Hollywood Sign takes a very odd perspective where letters overlap and blend into each other. While not an impossible angle, it does strike me as an odd choice for an artist. Moreover, the top image result for Hollywood Sign looks almost identical to the sign in the poster, and comes from Wikipedia (image provided). Given that images from Wikipedia are usually able to be used for commercial purposes, maybe the artists simply brought that existing image right into the poster, or the AI software was trained on it.
6: The poster looks like someone pissed on it. Usually humans don't do that.
While I'm not 100% sure, I'm definitely very suspicious, and I think the defence of "it only looks like AI because the alleged artist is so good the ai was trained on him" is odd and nonsensical, considering they are usually trained on millions and millions of images, and shouldn't consistently look like any one artist.