I agree the lawyer shouldn't have trusted ChatGPT, but I'm not comfortable with the idea that the lawyer bears all the responsibility for using ChatGPT and Microsoft/OpenAI bear no responsibility for creating it.
"May occasionally generate incorrect information" is not a sufficient warning. Even Lexis-Nexis has a similar warning: "The accuracy, completeness, adequacy or currency of the Content is not warranted or guaranteed."
And in any case, it seems like you agree with me that the lawyer was incompetent rather than malicious.
> Limitations
May occasionally generate incorrect information
May occasionally produce harmful instructions or biased content
Limited knowledge of world and events after 2021
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A lawyer who isn't prepared to read and heed the very obvious warnings at the start of every ChatGPT chat isn't worth a briefcase of empty promises.
WARNING: witty ending of previous sentence written with help from ChatGPT.