I mean, from the era he was from, it was the norm. Looking back into history and viewing it in todays standards will always be biased.
Of course if someone did that today, they should never even be remembered. But you saying the guy that had the second largest empire in history is a beta just shows how little you know.
"An international group of geneticists studying Y-chromosome data have found that nearly 8 percent of the men living in the region of the former Mongol empire carry y-chromosomes that are nearly identical. That translates to 0.5 percent of the male population in the world, or roughly 16 million descendants living today."
0.5% of the male population. Insane ALPHA.