I got used to using Copilot for a project that had it be accessible for very junior programmers (thus: lots of explanation in comments). It worked great, creating a chunk of boilerplate for each described function.

It’s absolutely useless in the real world. Code is 5+ years old, crosses over various coding conventions and does not use the stuff seen as default on StackOverflow.

Copilot couldn’t figure out what I wanted. Intellij’s long list of internal If-statements does the job though, and saves on a few households of power consumption.