Earlier quoted context omitted.
Or when I click the 'reply' button to post this very comment, which does result in a jarring full-page refresh — and one that instantly robs me of the fuller context in which I'm replying.
Agreed, I’ve often opened another tab, found the context of the comment I’m replying to and hopped back and forth. HN can be an echo chamber of JavaScript is the devil, websites should only serve html.
It's a reaction to the reality of the web, which is that Javascript is commonly used when it's entirely unnecessary, much more of it is often used than is necessary, and it's often used to abuse webpage visitors. Most on HN don't object to ajax-y bits of JS that make a page more pleasant to use.