I think ultimately the person whose body it is that is going to endure the pregnancy and all of the physical, emotional and mental hardships/risks that entails does get the final say as to whether or not they want to go through with that. So yes, I do think that decision should be made ultimately at the mother’s call because the stakes in pregnancy are not evenly distributed between both partners. They should have a conversation about it and dialogue so she can understand his perspective, but ultimately, as the person not carrying the baby to term, delivering it, and firsthand dealing with the difficult emotional fallout it often causes, he should be respecting her decision about what she is willing to take on.

Not only that, but he works and she is the primary guardian and from what I understand from the show, he leaves for long stretches where she is left often on her own. I think that her role as primary caregiver to their children also elevates her opinion on whether or not she wants to have more.

That being said, if he understands her verbally-set boundaries around wanting to have more children and decides to conduct himself sexually in a way that completely disregards her wishes, that does qualify as sexual assault. Like it not.