I meant that sociological behaviour does not have "one true adage" (i.e. survival of the fittest, or whatever-else), and cannot be simply concluded that way. ("It is very difficult to conclude a simplistic view of society/sociological behaviours.")
The examples I gave were meant to show that the behaviours that one believe to be "fitting" for a certain worldview, is suddenly not "fitting" in another group.
This is due to the key concept that most students learn in Sociology 101, being in a group changes your behaviour.
Therefore to study "behaviours", if you conclude a simplistic idea, you have to define its boundary. Maybe in, say, the Napolitan culture of Italia, a certain behaviour explains a certain reasoning holds true, but to generalise that to "behaviour" (in general) is hand-waving away many complexities.