Mike has never been either civil or uncivil.
He has just been a grindingly boring DUmmy.
For years he was one of the DUmp's most prolific posters, without ever making even a single comment that was clever, or intelligent, or entertaining.
He was nothing but boring, finishing in the top twenty DUmmy of the Year votes simply on the basis of volume.
Rumor has it his recent absence has been due to domestic strife with his trophy wife Sparkly, a dilletante decades his junior.