Actually I would say it is a big blooper on the part of the creatives and this just shows the screenplay has huge loopholes. I am also a mother but I won't give my child's hand to the first person that comes to my home. I would not even pair them up at the first instance. It is not about trusting my child's choice but it is more of me making sure the guy my daughter has selected is indeed a worthy person. And that conclusion can't be drawn with just one meeting. My take on this scene is that the creatives are completely lost as to how they should take the story forward pre-marriage and all they have is the story after marriage. But according to me the character sketching starts from the first episode - you can't recover the character mid way in the show.
I feel that these are aspects of the story the creatives should incorporate regardless of how mundane they may seem. It presents the characters are careless rather than carefree. A parents role is no small task that should be sidelined in a story. I wonder if it is varying degrees of approval that allow the types of reactions we see in shows or reality.