Actually we generally just gravitate to less salt. But there are zillions of books for cooking with reduced salt.
I can only suppose the pepper thing is a preference - know of no health reason for avoiding it.
And I always go heavy on black pepper.
But sure just avoid it, or try to come up with another spice that will go well with the dish.
Before criticizing a person, walk a mile in his shoes - then you are a mile away and you have his shoes!