No, research did't show that "we do this" or "our approach is that" or "humans aren't rational" -- what the research showed is that the typical person does this or that.

A similar experiment where people draw the wrong conclusions is the Milgram experiment. Yes, most people are obedient to authority figures and do what they are told. But not everyone acts that way.

This research likes to sweep the best human beings under the rug, as if being virtuous is not something to try to emulate, but is something to hide. This explains why the majority of people act the way they do. Perhaps if they were taught that their "we're only human" vices are not the ideal to emulate, perhaps if the best that humanity had to offer were put forth as the ideal instead, then these lesser human beings who make up the majority would become what they might be and ought to be.