I don't like the mob thing either but it's how large group dynamics on the internet work (by default). We try to mitigate it where we can but there's not a lot of knowledge about how to do that.
It's ridiculous that this impromptu feedback session is happening here in a sub comment of a trivia thread that many users will just overlook. Feedback and community engagement should be an ongoing, (semi-)formalized process, not an ad hoc, once in a blue moon type of thing that will have been buried under a deluge of garbage by tomorrow morning.
It's really weird how two of the most important platforms of the open source world (HN and GitHub) have no feedback process in the commonly accepted sense. Every niche Python package has an issue tracker nowadays where problems are collected, discussed, and often resolved, with the synergy of the community of users. But the grand systems underlying all of this are somehow exempt from needing anything like that, and "email the moderators" is good enough? I don't buy that, sorry.
There are many variations of this feedback system, but comments randomly interspersed in unrelated discussions, never to be found again, is not one of them. And neither is a private mailbox.
I'm also not sure that an internet forum like HN is a good fit for the issue tracker model—but that could just be rationalization on my part.