I think a lot of people here would agree that AI/LLMs got them off of stackexchange (not just stack overflow) and it's refreshing to not have to deal with the moderation's instant "did you google" / "duplicate question". These new contributors will learn and switch over to chat.com soon enough
Not necessarily "new to StackExchange", but at least to the physics site.
Was posted less than 24 hours ago...
That's not how Stack Exchange works, though. You don't have to register for a new account every time you leave an answer. The replies were all from new accounts, not established ones. I don't think it has anything to do with the amount of time since the question was asked.