Nope, he would end up serving MC without tainting any of his girls...(And I'm looking forward if and when MC can take Omar's wife and daughter to be part of his harem
).
It's about being an alpha male in a dystopian society, where alpha dominance is a must to have and keep what you want. At least that's how I play.
Hmm...a release in a few weeks. Time for a new playthrough to refresh my knowledge of past content.
I think you misunderstand what alpha male means.
It doesn't mean "take all the girls for myself".
It means being in full control of the situation, in the present but also in the future.
Therefore the scenes with Igor, I consider typical alpha male behaviour. By chosing to share his girls Zaton reinforces his alliance with Igor, who may prove a powerful ally in the future.
However, since Zaton is the alpha male, he does not need to share. He may just as well keep his girls for himself and respectfully add Katarczyna to his harem as a honourable second wife. This also strengthens his alliance with Igor. Like him marrying Zahra allied him with Omar.
So, both options can be correct.
However, forcefully taking Katarczyna to his harem as a "slave" (or in any other way without Igor's consent, which is not an option in the game) would weaken Zaton's position and is therefore not alpha male behaviour.
We have to remember: Zaton is not Attilla the Hun (yet), he's just an important officer under the Queen. He needs allies. And, coincidentally, Omar is a more important ally than Igor.