This is clearly a survival characteristic since it has survived and the only characteristics that survive are survival characteristics.
Back when pre-human beings were separating from pre-chimp beings the intelligent females of this species looked at the ones who spent their time wisely looking for bugs in the shade of the trees instead of the jerks who were trying to figure out how to balance on their hind legs in the heat of the savannah. The latter decided they had to do something to attract chicks so they acted all puffed up with NOLLIJ. This NOLLIJ actually attracted some of the chicks out of the shade of the trees and onto the savannah so these pre-humans kept it up.
Human males have been bloviating ever since. The best of them become lawyers and politicians. The less accomplished become scientists or clerics.
Shalom.
False premise. Neutral characteristics also survive.