double negative, well a form of it

John Atanaskovic of Atanaskovic Hartnell recently raided by the Project Wickenby tax investigation task force said: "All law firms not irregularly receive subpoenas and search warrants". Is he saying that Atanaskovic Hartnell regularly receives search warrants? I reckon this use of the double negative by Atanaskovic shows why it should be made illegal, well at least its use by the legal profession.