There is no built-in quote formatting, so code blocking is basically the only way to have it show different. Attribution is important to some, and a proper quote format would help with that.
I don't think there's any formatting that is better than simply prepending quotes with a ">".
Formatting may improve such quotes that already begin with ">", but the problem is that people come up with their own inferior solutions instead of simply using ">". For example, some people try to use italics which are hard to see, hard to distinguish as quotes, and don't even render as italic on some of the HN native apps I've used.
If ">" was good enough for decades of email and usergroups, it's good enough for HN. No, your quotes in this one post doesn't need anything different or special.
What HN needs is a simple formatting-help blurb when writing a post to set people straight once and for all like reddit (or res?) had/has. The first line of it, if I wrote it, would be "Prepend > for quotes, prepend four spaces to format code."
Interesting there was a small Help link[0] next to the text areas for a quick minute, but they have since been removed. This was definitely there in the past month.
https://news.ycombinator.com/item?id=21020162
https://github.com/corollari/fixedHackerNews/blob/master/ext...