It's quite likely. /cow/ actually tested that theory when they wordfiltered his rage posts to embarrassing shit back when he was stupid enough to take them on, and Nate noticeably slowed down and apparently had to retype them differently until they put a new filter, forcing him to slow down again.
Considering he may as well have the ability to make so many edits in a few seconds, I could see it. If that's the case though, I wonder if he has a bunch of ragey edit summaries saved in his browser (you know, how you can type stuff in and have something come up, click on it, and it fills the text field with that) and he uses whichever one he sees fit.
It was telling he kept respamming the same rage posts until the word filters made them backfire, but when he found something that wasn't filtered, it was spammed until they put in a new filter.