" 7.5 million JW's canot be wrong" that may sound like a damn good argument to the brain dead JW, but the public are not actually totally silly, despite what P.T Barnum said.
A restaurant near me advertised "We do the best food in town, thousands of flies cannot be wrong !"
Amusing, but they went bust. The public could see the flies in their mind, same with JW's they may think their Bul*s**t works, but it doesn't.