It’s strange...it doesn’t make any sense why this guy would want to go on record saying this, unless he really believes it doesn’t work (people just lie to make it stop) - and feels other forms of torturous interrogation that could be deemed better should be used. But if it is what made Mohammed crumble, then it obviously can work.
Well, it works. There is undeniable proof that it does.
So we have to look elsewhere for his motivation.