Just like people who blindly follow religion are dumb, often dangerous are those who try to rubbish everything that is not “scientific” or “modern”.
In the end it is not very smart to follow anyone blindly, without questioning the sensibility/utility of the path that he or she is asking you to follow.
There is a good way of testing the motive of such a person, whether your welfare is in his or heart or yours – disobey, clearly tell that you wont do that.
I remember doing that one to few dubious characters and their anger at that disobedience, not mere temper tantrum but quite threatening reaction. Being stubborn I of-course ignored their reaction, now I am glad that I disobeyed. That disobedience to apparently “benevolent benefactor” most probably have saved my neck, sanity and more.