No Historical Film Can Have Integrity

This is the opening of Anthony Lane's New Yorker review of Gomorra (which is so ecstatic it borders on parody):

The first thing you should know about “Gomorrah” is that no fewer than three members of its cast have been arrested on suspicion of illegal activities. There could be no more unimpeachable testament, surely, to the integrity of Matteo Garrone’s film, which is about organized crime in Naples.

Having a cast of real crooks, even if your film is about crooks, doesn't create integrity. Who cares what they do in their spare time?