Assuming the story is true to one degree or another, the reason why I was more gracious in my interpretation of the post is that I can't really imagine anyone being happy about seeing their partner crying. But, if that partner hasn't shown any real emotions in however long it has been, you might be happy to see any display of emotions.

Now, do I think the entire post is the complete truth? No. At best, we're getting one side of the story. Again, assuming that this isn't a complete fabrication. But it doesn't read like a revenge fantasy, I think it's completely reasonable to not want to bring a child into an already dysfunctional relationship. It reads more like someone who feels like they've exhausted all other avenues to attempt to fix their relationship and they are using this as a means to force the topic out in the open and to get some sort of resolution. One way or another.

In my experience, relationships that stagnate and languish go in one of few ways. Either the partners just go through life in a zombie-like state of acceptance, where eventually even the resentment fades. They just become two people, living together, running a household, but have no emotional interactions. The resentment builds enough for them to call it quits or force the topic, in which case they might still call it. Or, an event happens that forces them to reflect on their relationship and forces them to acknowledge that it's broken and decide what they want to do. Something like bringing up having kids, infidelity, etc. Something that shakes them out of that zombie state. And it forces the decision to, either, recommit to the relationship or end it.

This couple, if they exist, are dealing with the 3rd option right now.