They did not look realistic rather OTT.. Initially, they were shown over sweet with Imlie. When circumstances were bit difficult according to their convenience either discarded her or outcasted her.
Realistic in the sense, I've seen mother-in-law like apu, who can't get over the fact that her son has another woman in his life (a wife) who he could prefer sometimes over her, and expecting Bahu to babysit the adult son at all times.
I see narcissist, spineless men like AKT all the time around me.
In that sense, aur drama hai toh everything will be OTT that's not a problem.