[nikkwong]

I also find that the discussions in certain comments/responses can tend to go largely off topic. When you're on mobile, instead of scrolling ALL the way down to the next parent comment, you (I, at least), tend to navigate away to other HN posts.

[just4themoney]

HN has comment folding. Activate it by clicking the minus sign next to the "timestamp" to hide the comment and it's children.