That’s not a fair analogy. If anything, you could say “this is like asking a caricature artists to draw a bridge”. Sure their bridge might not end up being architecturally or structurally correct, but it will mostly look like a bridge.

These image generation tools are being discussed as something that could replace graphic designers (didn’t OpenAI refuse to open source DALLE-2 at a least partially due to this concern?). So it is absolutely a reasonable idea to compare image generation vs a human designer.

Saying that, the prompt the author chose to use was hard to parse even to humans, I am not surprised the tools failed so badly.