I imagine, for a while the complexity that Copilot can handle is limited to what most people would pull from stackexchange anyway. And if it helps autocomplete documentation and provide automatically generated (more descriptive) function/variable names, it will probably be a net positive for those limited use cases.

That said, I can't wait to read the first postmortem where someone deployed code generated via Copilot that has a bug. I just hope it's not on a rocketship or missile guidance system.