The show till now has made it pretty clear that MJ is no majboori ka maara, dukhiyara. He is a monster, a sociopath, a narcissist who is all about his inflatef false ego. Maintaining his charade of perfect man is of extreme importance to him and it doesn't matter who he has to sacrifice for it.
The way he treats Antara behind closed doors made it pretty clear. The way he humiliated Antara in the party by spinning the web of lies only to save hinself from any question was a proof of it. The way he almost killed his employees only to experiment how could have Rishi drowned is a proof. The way Rajveer was brutally thrashed only so that he could get shares of Rudra's company is a proof. He is all about possessing and controlling everything he thinks is his.
No normal man or father would go to the extent of hooking up with his son's girlfriend to prove that she is a gold digger. He could have done it in many other ways if he wanted to save his son but actually hooking up with her has to be the most twisted thing he could do.
It's not necessary for him to have enemity with someone to destroy them. A true narcissist would fake everything up only for his own pleasure and the moment the other party becomes a liability, they would destroy them emotionally, mentally and even physically & apparently that's how they actually survive. They don't feel the guilt at all because in their twisted head, that's how human beings are supposed to be treated. They see everything as a possession & assess how it affects their egos & image & pride. Maya knows what kind of MJ is. That's why she made Rudra do 3 day challenge only to humiliate MJ. She tempered with Antara's medicine because she knew MJ would behave in the exact same way. That's why she said that MJ never disappoints.
The way he tried so hard to control almost every aspect of his sons lives. Don't forget the thrashing Rishi got the day he dared to choose Maya over him & tried to stand against his father.
This guy didn't even blink when he shot Mayrah that day the moment he got the chance, didn't show an ounce of uneasiness after killing that girl even though he knew she had suffered at his hands directly. That's how monstrous he is.
People like MJ exist in real life and many people fall prey to them because of the kind of empathy & reasoning the original post is trying to apply. Because we, the empathic ones aren't capable of imagining that such people can exist. That's how Manvi was. She believed the charade because she couldn't imagine it to be false. This kind of benefit of the doubt shown by their preys feeds them & that's what makes them successful in exploiting people. They use gaslighting to show their prey as wrong everytime they are confronted about their true intentions or doubted, just like what MJ did when Manvi confronted him about his intentions. They use lies over lies, gaslight their prey, all for their ego and fun as long as the prey is in their trap, isn't doubting them or questioning them or confronting them upfront or is becoming a liability.
Ever wonder why so many people, especially women fall prey to such men because they believe their stories blindly and think that they need their help even when they are the ones destroying everything and yet acting like victims.
Manvi was empathic to the core and that's why she became such a prey to MJ's sheer narcissism and sociopathy.
It's not about judging MJ. It's about watching out for obvious signs in an individual's behavior, which are often overlooked,ignored but must be watched out for because a slip & miss will destroy you in every way possible.