As someone who has used copilot since the early beta days, what I think people are saying is that nobody uses Copilot to generate full functions like this. It's more of an intelligent auto complete. It's fantastic for repetitive autocomplete where certain things have to be changed, and for quickly getting out boilerplate code. You can put a list in a comment along with a format and generate data structures quickly and easily. You can solve small problems quickly, allowing you to focus on the bigger picture.
It's sort of like a power tool — sure, you could use a screwdriver, but a drill with a screwdriver attachment will be quicker. Hammers are good, nail guns are quicker. You'd never expect someone to use a drill with sd attachment if they'd never used a screwdriver before.
There are for sure things to be improved, such as the recent post on how you could put in a very specific seed and get out a specific function that it shouldn't. The answer here isn't to shut down the project, at a net loss for everyone, but to find ways to improve it.
As others have said, with Copilot gone and the new demand created, the vacuum will bring in community projects that will happily scrape every public repository they can get their hands on.