If they are trying to address the angle of what would Adi have done if Malini hadn't agreed to divorce him right away after he told her the full truth, that still didn't need this cheap fake pregnancy angle.
If Adi is still Adi, he will find a way to keep doing Imlie jaap regardless of even this turn of events. If Adi is still Adi, then he will maintain his stance that he can't give Malini any happiness or the love she wants, so he doesn't get the point of them being together.
The most they can show is him again wallowing in guilt over getting trapped but he will not give up his stance that Imlie is his everything. Forcing him to stay with anyone will not change that truth.
And I don't see Imlie leaving him over this either. So what will Didi have achieved in the end? Still ghanta.
Adi-Imlie's marriage and their relationship is already beyond legal technicalities and always has been....Malini can shout herself hoarse in her delusions but it won't change the truth. She can check off all the list of technicalities of what she thinks makes a marriage - physical relations, a baby or whatever....but ultimately without actual love and consent, there is nothing.
Anyways they keep finding a way to stretch out this vicious cycle....god only knows what lame point they want to prove.