I haven't watched the VODs myself but I am curious as to the nature of the Copilot use - is it a fancy autocomplete, a 2nd look at code he's already written, or is it generating large parts of the code?
The SerenityOS project literally has "NIH syndrome" at its core ["the SerenityOS project, which has a strong culture of writing everything from scratch.", https://ladybird.org/#faq] so I would expect a degree of skepticism of AI code generation.
But there was the post semi-recently about Cloudflare developers shipping a mostly-AI-generated software, overseen by real devs [https://news.ycombinator.com/item?id=44159166] Perhaps Andreas' use of Copilot is a similar thing, where he saves keystrokes and finds errors in the generated output with his own experience. I'll go watch some VODs.