I think it's hard to take any LLM criticism seriously if they don't even specify which model they used. Saying "an LLM model" is totally useless for deriving any kind of conclusion.
Knowing that ChatGPT output good tokens last tuesday but Sonnet didn't does not help us know much about the future of the tools on general.
Isnt that exactly what is going to help us understand the value these tools bring to end-users, and how to optimize these tools for better future use? None of these models are copy+pastes, they tend to be doing things slightly differently under the hood. How those differences affect results seems like the exact data we would want here
Well, it depends a bit on what you mean by blunders. But eg I've seen it confidently assert mathematically wrong statements with nonsense proofs, instead of admitting that it doesn't know.