You have a boat load of kids and decide when you are old and it is dangerous to keep popping them out (by choice).
Seems to show a lack of responsibility to me and no care about loading up their kids with a possible expense and burden for life after they have gone.
This could become a case of their choices becoming their other children’s responsibilities down the line.
It seems to me you don’t know what you are talking about. It is “dangerous” for some women to “pop out” even one child. My daughter is law had to have her babies delivered by c-section.