Nope, it's at least as old as May, 2020. It's just painted cardboard, not that hard to set up IRL.

Tineye shows a 2020 post with this image, you sure?

What made you think this was AI generated?

It's from 2020, AI was nowhere near good enough to get close to looking like this.

In fact, here's the OP, a photographer on Reddit: https://www.vxreddit.com/r/pics/s/3qM4aq12UU

Every image that's posted now has someone calling it "AI slop" without the slightest bit of evidence, reasoning, or research. It's so frustrating. I hate the stuff too, but honestly you're laundering their image. If everything is called AI slop then the valid calls don't matter. It also works to say "their technology is so good, this real image can be mistaken for their output." It's bad in so many ways. Please stop, unless you want to put more effort in.