I'm a bit scared for what this means as I don't think being able to faster write boilerplate is something worthwhile. The example ed_elliott_asc made is one of those examples where instead of fixing things so you don't have to repeat yourself, copilot makes it easy to just live with the boilerplate instead.
> than spend half a day tweaking test coverage on your one-off library
If you need to write a library and spend half a day to populate a list, you have bigger problems than boilerplate.
Nothing wrong with having duplicate lines. The problem becomes when writing those lines become automated so you start spewing those all over the place.