That's where it started, but they're entirely separate banners now. It is actually not allowed to organize raids or other Anonymous-style hacktivities that are

That's where it started, but they're entirely separate banners now. It is actually not allowed to organize raids or other Anonymous-style hacktivities that are against US law on 4chan. So, calling for cyber war may just net you a warning from moderators. The board is not the bastion of absolute unregulated free speech people think it is! More broadly, outside of the current geopolitical context, trying to pick a target and rally anons against it is in bad taste. If you try, you may be told that "4chan is Not Your Personal Army" (NYPA). As a result, the various "Anonymous" groups really don't have a home there.