If you believe that Islam is the purest manifestation of sin, I suppose his statement (taken without other context) could be interpreted as somewhat correct, since we are all sinners. What he expressed with his statement, of course, is the belief that mankind should unapologetically serve Satan and slaughter Christians, conservatives, and all other people who just want to be left alone.
I think you are on target. I just wish he would think how it will be if others show him some “peace.”