So the start of this thread was about a woman who had a boyfriend with a devil child. Everyone said he wouldn't do anything, the situation is bad, so you should leave him. Now it seems to be people saying the step-parent should butt out and allow the parents to do their own parenting, no matter what the situation or result.
To me it sounds like not many people are really advocating discussion or decisions here. Sure, some people told 4d and kvj to discuss stuff, but based on the following discussions it sounds more like the suggestion might be for 4d to tell kvj his plan and then kvj has to decide whether she's OK with that or if she isn't. There's no give and take, agreements, compromises, nothing! How is that healthy, regardless of the situation? Isn't marriage all about compromise? I'd think a healthy one is, but I wouldn't exactly call a bunch of marriages I've seen healthy.
Not everything is so cut and dry as a lot of you are making it seem. It's easy to just sit on a pedestal and tell people what's definitely right and definitely wrong, but I don't think there's really an answer until you experience the situation at hand. You can get as much advice as you want, but you won't know the answer until it happens and you know what's right by you.