This is another example of the phenomenon they’re describing, not a counterexample.

...The post I replied to specifically said "It [questioning people's self-evaluation of productivity] is only asked by LLM skeptics, about LLMs".

Naming another example outside of LLM skeptics asking it, about LLMs, is inherently a counterexample.

Wow you're completely right and I just completely forgot who you were replying to. I thought you were replying to the person the person you were actually replying to was replying to. Sorry about both my mistake and my previous sentence's convolution!