I have personal experience with MA liars: I used to be in a Shaolin Do school. I felt that I could have confronted them on the "history" of the art, the origin of the techniques, or even why the "grandmaster" only took 19 years to learn all of the material while his most senior student has been with him for nearly 40 years and is still getting "secrets" revealed to him. Do the lies affect me? No. Did the zealots manage to convert me to their way of belief? No. I felt it was more productive for me to just sever my ties and move on with my life. I suggest the same to other people who can't let go of their hang-ups.