They flex their copilot subscriptions, but they are not flexing how they’ve done advent of code with common lisp. They flex how they can chat with a book, but not what they’ve learned from it. They flex how they can generate pretty pictures, but they can’t say what it means to them.

This sounds like you don't understand what Copilot is. It doesn't write software from scratch. It's just a fancy autocomplete.

I've used it, it's absolute trash for anything but boilerplate yavascript.

It seems to do pretty well with zsh, go, python, and rust when I use it. Even for more complex tasks - but "context-aware universal snippets/boilerplate suggestion" already sounds pretty valuable, doesn't it?