Some of us vastly prefer a time stamp to an utterly useless relative measurement displayed.
Ditto. Maybe I loaded the page yesterday. What does '1 hour ago' mean? Was it updated by JavaScript? Is it an hour from now, or from yesterday, or what?
Give me a timestamp, and I know.
"N minutes ago" is compact and does not require any client-side JS to provide an unambiguous value.
At least LWN includes the timezone, which is a step ahead of most of the sites I've used.