It often has errors, but if you just paste the errors into the chat it will generally fix them. In the early versions of chatGPT, I had issues with doing stuff like writing networking code in C++, but it still got me a lot of the way there.

I recently went over writing a high throughput async data pipeline in Java, and it did a great job of writing the code and even taught me a new design pattern. I had to make a few small changes here and there, but basically it turned a week of work into a couple hours. With the context of the written code there, I also had it write unit tests and documentation for me, and I was able to have it add more unit tests and also integration tests based on my feedback.

I'm fine with people underestimating how good ChatGPT is as a coding assistant, it just makes me look better because of how productive it makes me.