It is because of the deep philosophies (derivations from the Upanishads) embedded into these epics (and in general, in the content of the scriptures), the "Knowledgeables" say that our ignorance is out of our lack of holistic knowledge.
One can have doubts - but those doubts are linked to the ability to percieve (behold bigger ecosystem in mind) rather than the veracity of the scriptures. So the doubts need to be cleared by seeking clarifications.
It might take long time to even assimilate this, however the facts slowly sink in with more and more knowledge.
Love and best wishes
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