I'm going to go with yes, they probably wouldn't champion for censorship of opiniond based on the basis thst it said they sucked. Odd as it may sound, gamergate's "censorship" is pretty much only called censorship when gg does it, it seems. Boycotting websites, contacting advertisers, pressuring for some writers to issue apologizes or to not get future employment, are all well established tactics of digital protests and activism.
Look back at some of the earlier indtsnces of this sort of thing occurring. The firing of shock radio host Don Imus for using the term "nappy headed hoes" on his program. People did the same thing gg did, contacting adverts and pressuring the company employing him, spreading the information publicly to dhame them, etc. Everyone cheered and called the people decrying this stupid, or worse, racism supporters.
Why is it that with this precedent set, when the same tactics are applied to websites or individuals who supported them years ago, now its suddenly censorship? There's a clear line between getting mad at something someone said, and preventing them from saying it via the law. Between activism to get ones results and trying to change the law to get ones way.
Even if that wasn't the case, and Gamergate would be fully on board with the "Cyber violence" rhetoric, I'd still call them out for essentially trying to make it illegal to say "I don't agree with you" in a way they don't like. Unitil that happens though, I'm going to give them the benefit of the doubt on this issue.