The main argument against group selection has always been that, well sure, it would be nice to have a group of cooperators, but as soon as you have a group of cooperators, they're just going to get taken over by free-riders, individuals that are going to exploit the hard work of the others.
Glavni argument protiv grupne selekcije uvijek je bio da, pa sigurno, bilo bi lijepo imati grupu suradnika, ali čim imate grupu suradnika, bit će preuzeti od strane solo igrača, pojedinaca koji će iskoristiti težak rad drugih.