Obviously he's going by the definition that it's not a proper Commission meeting unless it involves the bosses of all five families. And that hasn't been done since '85. As the article points out, the bosses of the Gambino, Genovese, and Lucchese families met in '88. And leaders from all families met in 2000. But he just referred to these as mini-meetings.

And, of course, there are those who go by an even stricter definition of the term that would argue that it's not really a Commission meeting unless it involves at least the 7 original families on the Commission - the 5 NY families, Buffalo, and Chicago. I'm not one of them though. The Commission started out that way and then later added Philadelphia and Detroit. Then Chicago broke off and Buffalo, Philly, and Detroit lost their seats when the bosses died; leaving only the NY families left. So it's always been in a state of flux, with it being only a New York enterprise since the 80's.