In MM, there is a scene where, one of the DILs gives the child to her parents when Saranya (her MIL) comes because, Saranya is asthmatic (or TB or something) and she doesn't want the child to be with her.

The son hits her for it and his wife's parents also reprimand her for using them to keep the child away from her MIL!

This is pretty new, isn't it?
The 'kodumakkaara marumagaL' merged with the 'protective mother'.
The husband actually says: 'even if my kid dies because of some infection contracted by being close to my mother, so be it'.

indha mAdhiri clash of values ellAm assault-A koNdu vandhiruppApla.

I think I mentioned about the final fight in this thread earlier when I saw the movie on TV. An example of the 'natural' fights that we see more often now.