the system of long-lived nicks on YNews is intended to build a mild and flexible reputation system. This is valuable for complex topics, and to notice zealots, among other things. The feeling while reading that it is a community of peers is important.

AI-LLM replies break all of these things. AI-LLM replies must be declared as such, for certain IMHO. It seems desirable to have off-page links for (inevitable) lengthy reply content.

This is an existential change for online communications. Many smart people here have predicted it and acted on it already. It is certainly trending hard for the forseeable future.