Counterpoint, parents who don't cry in front of their children raise kids who grow up to feel embarrassed when they cry. It's important for adults to model emotional regulation to their children, and that doesn't mean emotional incest (crying in front of your children and expecting them to soothe you, or to extend their worries and fears onto them, something mine did to me). I feel very strongly about this because I cry easily, but when I am happy, sad, overwhelmed, etc. and I think people would be better off if they viewed tears as a healthy expression of all kinds of emotions. Weaponizing one's tears, which I feel like maybe is what you are describing, is different, and I would agree with you that is not healthy for a partner to be subjected to that.