I can't really tell you what's going on with the ****show that is the Joe Vialls / Ari Ben Menashe Port Arthur conspiracy theory that the massacre was orchestrated by Ben Menashe and carried out by a Mista'arvim team.
What I can tell you is that Ari Ben Menashe is certainly a real Israeli intelligence agent who applied for refugee status in Australia in 1992 and his claims unrelated to Port Arthur regarding Iran-Contra smuggling through a WA port and Jeffrey Epstein being a Mossad agent are worth a look.
Furthermore Rebecca Peters the main lobbyist for gun control who was at it for a while before Port Arthur and essentially got her way as a result almost immediately went to work for George Soros in New York afterwards.