AI art is easy to pick out when no effort was made to deviate from the default style that the models use. Where the person put in a basic prompt of the desired contents ("man freezing on a bed") and calls it a day. When some craftsmanship is applied to make it more original, that's when it gets progressively harder to catch it at first glance. Though I'd argue that it's more transformative and thus warrants less criticism than the lazy usage.
As a related aside, I've started seeing businesses clearly using ChatGPT for their logos. You can tell from the style and how much random detail there is contrasted with the fact that it's a small boba tea shop with two employees. I am still trying to organize my thoughts on that one.
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Example: https://cloudfront-us-east-1.images.arcpublishing.com/brookf...