Whatever Prem did with Sneha, Kasak, Mukti was definately wrong!And yes we would be glad if he was punished for all that!In fact if he cried that badly for Mukti all the Premikas I'm sure would rejoice!!!!!!Why? Because he deserves it! His intentions have been wrong yes I agree but this time he hasnt done anything. In fact recently we have all seen him genuinely trying to be Prem again at times! Like how he saved Sneha and how he was concerned about his Mother India's safety so he went and talked to Shravan about it! Anurag and Prerna committed the mistake of not believing him earlier that transformed him into UD again. This si the second time this has happened and there is no way their actions can be justified I'm sorry! Whenever Prem does ANYTHING wrong when confronted he owns up to it. Like when he tried to mess up Sharad and Sneha's reputation before they got married and Mr Bajaj confronted him? He said alright alright I'm caught! Or when confronted about helping Sharad he said yes I helped him! He never denies what he has done when confronted. Here he was begging them to believe him and they refused.
I'm not saying that Prem was right to do what he has done to everyone. Yes he was very very wrong and if punished for his wrong doings earlier I'd be very glad like when he helped Sharad, if Mr Bajaj or Prerna or Anurag slapped him that much I would be so so so happy because he deserved it. However at this moment, treating him like that isnt the best thing to do because it has only ruined his relationship with that family and his parents.
Anyway this is just a show so please chill out and dont go blame anyone for having double standards. Hope that helped.