I believe Redietz' strategy is to conceal his need for praise while attempting to satisfy it by pretending that he is expressing his disdain for someone when his real purpose is to brag about something.

Thus all of the theatrical "I'm astonished, absolutely floored, that you don't know this thing I know!", and his affectation of contempt for a forum that he has repeatedly pledged to quit and yet cannot help himself from returning to as soon as he thinks he has something worth bragging about.