LISTEN TO ME. NAVIER WAS TRULY THE INFERTILE ONE, NOT SOVIESHU. BUT SHE ALSO GAVE BIRTH TO TWINS LATER ON. INTRIGUED?? I HAVE WRITTEN A WHOLE FUCKING SPOILER EXPLAINING THIS. IF U WANT TO KNOW JUST DIG IN RIGHT AT THE COMMENTS, IT'S NOT THAT FAR AHEAD.
The "karma" for all of Sovieshu's bullshit, was more than suspecting he was infertile. It was banishing the baby away from the empire, and later on found out that he was truly the father but the baby was already killed in an attack by the bandits. He was losing his mind from all the things that was happening to him after the divorce. THAT. THAT was his karma. That's mooooore than just fucking suspecting he's not the father. That's just too soft of a blow.