'He' is probably a small team of people using that account to repost paid content. There are dozens of massive accounts like this, I wish I had a comprehensive list to filter them all without going through user history one by one.
What is the point of aggregating so much traffic into a single account when it is not really a single person? Too easy to notice, too easy to block, why wouldn't someone paying to have content posted use many different accounts?
The account eventually gains some level of recognition - while you have vocal haters, you also have people that upvote their content (likely based on the username) to the frontpage. Most of what gallowboob posts is garbage and I guarantee you that if it was coming from accounts with less karma or notariety it wouldn't reach the front-page. You have to consider that some of the people upvoting are people commenting on the threads.
