Usenet with dial-up was good for this. You'd compose your reply, then look it back up, read over, amend, perhaps delete or send later. It made for more considered responses.

I've noticed with HN it's very swarm-like and transient these days. Comment following is also difficult without some thread control. At a minimum you need collapsible threads. Too much to read, don't bother, say something that's been said already - and add to the noise. Or have a bypassed dangling leaf comment.