Defamation in the US, unlike other countries with much weaker free speech laws, has a very high bar to reach. To be liable for defaming a public figure from within the US you must publicize[1] material falsehoods[2] that you either knew were false or were negligently reckless about fact checking[3] leading to provable damages[4] stemming from the fact that people believed the falsehood[5].
Ignoring the GPT part of the problem all together, claiming someone to be the most incompetent programmer in the world would probably fail [2] for being understood as a statement of opinion rather than fact, possibly [3] if there was any basis for the claim whatsoever, likely [4] because the named individual would have to prove they were damaged somehow (maybe not if it led to them being denied employment or something), and [5] because the average reader would almost certainly understand it as hyperbole.
Reintroducing the GPT part, assuming the defendant is OpenAI for output of GPT, I would also argue a failure on point [1]. OpenAI doesn't release to the general public the output of the GPT program.
Ignoring the GPT part of the problem all together, claiming someone to be the most incompetent programmer in the world would probably fail [2] for being understood as a statement of opinion rather than fact, possibly [3] if there was any basis for the claim whatsoever, likely [4] because the named individual would have to prove they were damaged somehow (maybe not if it led to them being denied employment or something), and [5] because the average reader would almost certainly understand it as hyperbole.
Reintroducing the GPT part, assuming the defendant is OpenAI for output of GPT, I would also argue a failure on point [1]. OpenAI doesn't release to the general public the output of the GPT program.