Can rationality jeopardize the interest of the individual?

There is a very widespread idea (promoted by celebrated thinkers like Richard Dawkins, Lawrence Krauss or Michael Shermer) that cognitive bias evolved due to the fact that, in the African Savanna, your ability to make accurate predictions may be counterproductive for survival.

The usual example is the hominid that hears a noise in the bushes. The non-scientific mind overestimates the chance that there is a dangerous predator, and it's more likely to make a "type 1 error". On the other hand, the scientific mind knows that the likelihood of there being a predator is minuscule as opposed to other plausible explanations, like the movement being caused by the wind. Therefore, he/she does not take the necessary preventive measures against eventualities and this jeopardizes his chances of survival and eventual reproduction.

This is a shocking epistemological misconception, in my view. The assessment of the likelihood of possibilities is independent from one's particular risk aversion. Science does not and cannot deal with the desirability of events. The problem is not that one hominid had a scientific mind, but that his/her values were not well adjusted for survival.

What do you think?