Don't post that without an actual recommendation. Which mobile browser renders that legibly?

Otherwise it's just noise.

Indentation is for code blocks. Such blocks are supposed to be rendered monospaced and unwrapped. A browser that didn't render them that way would be broken. The solution is to format quotes in a way that's appropriate for quotes, not using code formatting.

(The real solution would be for HN to support an actual quote style, like Markdown's leading > style, but alas....)