I think you missed the point of the parent comment. My experience with ChatGPT is that it responds to each and every thing sent to it. It doesn't seem to have the ability to not respond.
The original question was, given that there were X comments which could be replied to on this page, how and why did the poster decide to respond to the one to which they responded, rather than either "all" (like ChatGPT would) or "none?"