Storytelling, charecterization, screenplay - all are responsible. Like many have pointed out here, abuse and incidents of abuse were merely plot points to get Kunal and Nandini together. When they showed her abusive life initially, with all those explicitly violent acts - everyone knew that was violence , there were no two ways about it, no confusion and hence no discussion and not many explicit posts calling it violent or abusing Rajdeep. Generally, whatever is blatantly wrong need not be labelled as such, unless of course there is an attempt to legitimize it or there are posts that are outrightly defending the perpetrator or the act. That could be one of the reasons why you may not have seen many posts. So, lack of posts does not really equate to lack of outrage. And as for those negligible number of posts that trivialised marital rape, I believe there have been a deluge of responses that attempted to knock some sense into the postmakers, whenever they have come up.
Also, I believe a section of the audience, though they may condemn specific acts of physical violence, still DO NOT genuinely understand abuse. Why did she not run away? Why did she not seek help? Why would anyone suffer like this for years? These are some of the questions that we have seen. Now, I won't be able to answer why they are unable to understand, but that is not even the point. The point is that they simply DO NOT understand it. Which means they also do not understand the kind of lasting impact that it makes on the victim, which could also be the reason why they are calling her weak. ( I am not justifying this but simply stating what I have observed) The makers could have handled this better, but they did not.
Rajdeep's characterization - His character has no layers. He is as unidimensional as they come. There are no other facets to his character, no backstory and no confusion about what he feels for Nandini. To Rajdeep, Nandini is his property or a better word would be a slave, who he uses and absuses for his pleasure and also let others use and abuse for his financial gains. At no point in time have the makers tried to show any thing that made us look at him any differently. He is what he is and hence no confusion, no need to explicitly label him as anything. Hence, no discussion and separate posts for him. Personally, I can use all the vile words in my vocabulary for him at one go and be done with it, why repeat the same thing everyday, unless someone is trying to prove otherwise?
When it comes to the outrage on EMA, like many have pointed out here, this is not a simple EMA. First there was an attempt to make it look like it was destined, then they rushed through the whole thing (we still don't know why Kunal fell for Nandini) and then the most obvious and the most painful fact that Nandini backstabbed the one person who was responsible for getting her out of her wretched life, while showing no remorse. The screen space dedicated to showing this is much more than the screen space dedicated to showing abuse and the possible trauma resulting from it.
Another factor would be the lack of clarity in Nandini's characterization. Nandini's under developed character here is losing out to the easily relatable Mauli's character. More connect with Mauli obviously results in more outrage on behalf of Mauli. I would again blame the makers for it because this is a visual medium and most people will react to what is being shown, rather than making assumptions or analysing 'what if' scenarios in a bid to understand the character and situations better.
Now all these are merely observations, and this is not say that the vile name calling is justified. It is not. It is a complete put off and it totally limits the scope of any meaningful discussion.
Pati Patni Aur Panga
Jaane Anjaane Hum Mile
Tum Se Tum Tak
Kyunki Saas Bhi Kabhi Bahu Thi 2
Mannat Har Khushi Paane Ki
Vasudha
