This is offtopic so I'll leave it to just this one reply, but thanks! Lack of quoting in HN's markdown is the only part I have actual frustration with it; I usually use the two-space + wrap format because it makes it much more clear that it's a quote; I find your version hard to tell. But that said, I checked on my phone, and I see what you're saying about mobile. Ugh.
HN markdown does support italics, so italicizing entire paragraphs is a viable alternative to differentiate what you're quoting from your own comments. I've seen folks do it now & then.