Tbh I'm just happy to have hacker news, continue as you are.
In this case, I could avoided it by posting a different comment with the same link and pinned that to the top instead, but then ChrisArchitect wouldn't be getting the karma for their contribution. That seemed unfair. Hence the above.
I do sometimes think about building an edit-and-diff mechanism for HN comments though! People could suggest edits to comments and they could be treated like pull requests. I can't tell if this is a great idea that would massively improve the threads, or an idiocy. (Edit: I was looking for a comment where I mentioned this not long ago: https://news.ycombinator.com/item?id=25459870, and found another one where I mentioned it 7 years ago: https://news.ycombinator.com/item?id=8214456. That's nuts!)
Edit: oh one other point: there will always be "wiggle room for interpretation". The idea of eliminating it is a fantasy, and trying to make systems to eliminate it is a wild goose chase.
I don't mean to pick on you personally—it's a style of thinking that pops up a lot. Being a moderator, and thus a sort of bureaucrat, attracts arguments from the bureaucratically minded. All I can tell you is that it's the opposite of how we think about HN. In my view it would be a big mistake to let it direct how we operate HN or what features to add. The way I look at it, HN users have a right to an interesting forum that doesn't suck (or at least relatively doesn't suck), that's a hard problem, and anything that detracts focus from it is a really bad idea. I get that you think differently and I don't mean to be disrespectful. But yes, I am thinking about the culture of HN.
However, I also think there should be space for discourse about the mechanics of the action; however academic that discussion might end up being.
Personally, I think a suggestion to the OP encouraging them to edit the post themself might have been a less controversial method of achieving the same aim.
Don't get me wrong - I'm not saying "just trust us". Trust is earned. But the way to earn it is to always be open to questions, answer them as well as we can, and when people point out mistakes, to admit them and fix them quickly. That's what we try to do, and it's informal and social. Formal/technical methods are neither necessary nor sufficient for community trust, and it would be a big mistake to think otherwise, because it would steal resources away from other things, like human-to-human communication and making the site itself better.