Aight, there are some major plot holes with this race building.
1. If their supposed to be a race built off of strong warriors, wouldn’t they been similar to Mongolians? I mean, they were very well know for their horse riding and military skills. So I’d expect them to be more like Mongolians since their a military race. And, most female animals decided on mating with strongest males, but not most males are violent ugly bastards. It just seems that the author just amplified the males masculinity beyond what it would actually be.
2. How the fuck would the birth rate go down!? Like, the only difference I can see happening is the males average strength going down. And even their behavior. Birth rate has nothing to do with this at all! I can see why, because the author wanted to use the term teaser in this. But, all it did was create to large plot holes.