I think you're reading into my comment things that aren't there. Pointing out that even apparently simple things contain hidden depths is not an example of nihilism, tactical or otherwise. Likewise, it's not a denial of research - it's an acknowledgement of the research that uncovered those hidden depths.
Your point about how a specialist can connect their knowledge to what they see is true, but not relevant to the point at hand. If I was your therapist, and had studied and understood you thoroughly, I might be able to assess your mental state at a glance in most scenarios. That doesn't deny you have a detailed inner life anymore than that an arborist might generally understand a tree does not deny the complex life of the tree.
Your point about how a specialist can connect their knowledge to what they see is true, but not relevant to the point at hand. If I was your therapist, and had studied and understood you thoroughly, I might be able to assess your mental state at a glance in most scenarios. That doesn't deny you have a detailed inner life anymore than that an arborist might generally understand a tree does not deny the complex life of the tree.