I don't understand why anyone is seriously expecting "GPT" to write code? Writing code is really analogous to proving theorems (the Curry-Howard correspondence). IIUC that is not what the GPT "language model" was ever designed for.
[1] https://openai.com/research/formal-math (feb '22)
[2] https://www.deepmind.com/blog/competitive-programming-with-a... (feb '22)