The"bot" posts are getting sequentially older. The last one (most recently posted on the community discussion board) involved John McCain and was dated 2.13.18
They are all from Sean Hannity’s main site list of articles. At the bottom of each article you can click a button to “discuss” the topic.
Obviously some person is going through old articles and posting them here. No programmed “bot” would be ‘clicking’ articles THAT OLD abd sending them here for discussion.