I just want to second this. Your prompt asks for a description, and you get a description. If you instead ask something like, "Do or don't you know about the unspoken etiquette ..." you'll get an answer about whether that specific thing exists.

https://chatgpt.com/share/680b32bc-5854-8000-a1c7-cdf388eeb0...

It's easy to blame the models, but often the issue lies in how we write our prompts. No personal criticism here—I fall short in this way too. A good tip is to ask the model again, with the prompt + reply and the expected reply why this didn't work... we all will get better over time (humans and models)