Posting full articles is probably not great, but the number of posts per time unit probably shouldn’t be limited unless it’s causing a technical issue. It’s news content. That’s why we’re subscribed.
Maybe poster is out of work right now, following the news closely, posting what seems important. Surely 10-100 important news items happen each day.
In my opinion the volume of posts isn’t the problem, but copy pasting full text from a site is the issue.