You just witnesed famous Moooo spam
He can lead this self monologues pretending he is talking with multiple people for hours on Fedimian shout channel.
I once witnesed him just siting half hour in front of mage tower dungeon just writing Moooo Moooo Moooo Moooo Moooo in to the chat. That was before his nick change
When you meet his non idle character he actualy plays normaly though
His life must be very lonely.