He's also made a fool out of himself in very unashamed and public ways, and spread a lot of FUD. Windows XP raw sockets and Windows meta file come to mind. He's also said that Metasploit is a controversial piece of software that's main use is to develop malware.
Steve Gibson is a talker, even if he doesn't know what he's talking about. He will say whatever he wants and issue corrections later when he's been proven wrong. It's not a cheap shot. It's well documented, he's been called out on it for years, but he's still calling himself a security expert while simeltaneuously spewing bullshit, for 15 years now.
And "not current" in security means "useless", or sometimes "actively harmful". There is no way to call yourself a security expert if you're out of date.
http://attrition.org/errata/charlatan/steve_gibson/