3 meals a day might benefit the children, too. Not fighting in front of them is probably also a good idea. What does he propose that is bad for children?
Well, poster above me was implying that his demands were reasonable, as he is staying with her and children. If she wouldn't agree to him, he would leave and left her with children, that is not exactly unconditional love for his children and also sexist/macho.
It's not a given that staying together is best for the children. If there is constant fighting, separation might be better for all of them.
You are right from today's perspective. But you have to keep in mind that was early 19th century, maybe seperation than was harder for wife and children.
EDIT: I meant early 20th centory...