I think so but I also there is more to it
I think he wants his son to spread around the genes with some other people.
He is against the uke, because his parents are normal humans and his status is low. Also the father is thinking that the uke's genes are bad and not good for making good beastmen. To make it short the father is a norrow minded ass.
He just doesn’t believe that beastmen with strong genes like them should end up getting tied with just one partner. Sougo’s free to have as many children as he can possibly support, but he shouldn’t marry one
Thanks!
I am a bit confused. Is the father against the uke because the uke is not a beast genus? Or is it because his job as a doctor make childcare difficult?