> I think this shows that LLMs do NOT 'understand' anything.

It shows these LLMs don't understand what's necessary for washing your car. But I don't see how that generalizes to "LLMs do NOT 'understand' anything".

What's your reasoning, there? Why does this show that LLMs don't understand anything at all?

I think this rather shows that GPT 5.2 Instant, which is the version that he most probably used as a free user, is shit and unsusable for anything.