Doesn’t need to be good. Just good enough that people need SO less often. If GitHub Copilot gives a code suggestion, I don’t need to look up some syntax or some method I forgot. I’m reminded, and can see that it’s correct. No searching online required.

It’s a little more decent than you give credit for. I use it all the time for easy generic subroutines and functions. It struggles a bit with specific, complex requests but is generally pretty versatile as a miniature code assistant. It’s good at catching human errors like loops starting or ending at the wrong specified integer, so I use it as a debugging tool.