It's kind of interesting how quickly sentiment turned negative. The original feature showcase/announcement post was full of excitement by HN (which is kind of strange, if you think about how skeptical the HN crowd is towards AI/ML and automation of programming) but it hasn't been a week and people are already talking about the questionable ethics and potentially disastrous consequences of using the feature.
I can't speak for anyone else, but when I first saw it, it seemed kind of okay, but I also didn't really look too deeply in to it. As I've looked at it a bit more closely and thought about it for a few days, my original feelings have soured quite a bit.
I never considered the copyright and related ethical implications of ML at all, or thought about the impact it may or may not have on programmers. Your first thoughts on something can be wrong (and actually, often are) and it takes a bit to really think things though – or at least, it does for me.