The findings here seem fairly spurious. Intuitively true things are given more immediate access in the brain because the neural pathways are strong for them. Non-intuitive things take longer because the pathways are weaker. Equating this with instincts seems unreliable at best. Really the problem is people have a hard time grasping the unintuitive so long as it is not brought into alignment with more intuitive concepts. This is much more fundamental than "bad instincts" - it's really more that the vast majority of learning takes place outside of conscious perception and is not conceptual in nature.