This is a really good summary.
The more you think of Cartesian rigor as a tool, a useful but complex machine requiring effortful training in its operation (like having a personal computer around), the less you’ll end up like the guy on the left. But if you throw out everything else as “immoral” (i.e. you become a gnostic, despising instinct) then you’ll end up trying to justify justification itself, and you’ll have a bad time. Our use of reason properly rests on the animalistic heuristic that we’ll be better off in life for the effort.
To extend the analogy, people who know how to use computers make more money, kill their enemies more effectively, and have hotter spouses.