The essence of Jung's types is the _balance_ of functions in the consciousness, but not a "complete absence" of some interests and skills. What you said is an overstatement.
All S types use N in lesser degree. They may also to have interests in N related regions (mostly valued, but not obligately) like obscurity typologies, Tarot, flying sources, fantasy literature, etc. Discuss and read about that. Sometimes people may work in weak regions, including nonvalued.
But a chance for N types exist.