Well, what he wanted was to replace one monarch with another, so how accurate is it to him as an “anarchist”?
But I don’t agree with people who rail against those who use the Guy Fawkes mask as a symbol of anarchy or antiestablishmentism. It’s not even Guy Fawkes himself who is the symbol, but the mask modelled after him from V for Vendetta… so as long as people aren’t confusing Guy Fawkes or his intentions with V and his, I don’t see why using the mask as a symbol is a big deal. The problem is that people do confuse the two, so I can see why that’s annoying.
Alan Moore is an anarchist, though. He only modelled the mask after Guy Fawkes because the guy tried to blow up Parliament, and Moore would probably support that act regardless of whether it was in the name of Catholicism or anarchy.
I just googled it up, though, and apparently David Lloyd, who illustrated and co-created the comic book, said that V would “decide to adopt the persona and mission of Guy Fawkes – our great historical revolutionary”, which…. ehhhh… is very misleading. Seeing as he’s British and should know all the history behind Guy Fawkes Night (better than us Americans, at least), it seems odd that he would say something like that, unless… V was a Catholic revolutionary the whole time.