> What I see is new users who are trying to share something without having yet understood HN.

From their perspective, HN is another place to post and get views on their project, part of a check list for their "launch" or whatever, not everything comes from within the ecosystem.

Some posts their projects then never reply to any of the comments, while for me (and many others I bet) half the reason of posting a Show HN is because I'm looking for participating in discussions about my thing and understanding different perspectives thinking about it too.

> I want to believe that most new users mean well, they just need better explanations.

Yeah, so far the only thing I know of is the "Please read the Show HN rules and tips before posting" blurb on the /show list, and the separate pages. Maybe some interstitial or similar if the title prefix-matches with "Show HN" could display the rules, guidelines and "netiquette" more prominently and get more people to be aware of it.