For some readers Stephen King writes banal melodrama framed by comic book plots, while for others he is master of the human condition. So to a large extent, what is "melodrama" does depend on people's tastes and life experiences and exposure to types of films, TV serials, music, and books.

A musician who is a seriously deep poet of the human heart to a fan, is to someone else a whiny git with a suboptimal understanding of what chords are for. Or even some titan of classical symphonies is to one person a master of divine transcendental architectures, and to another--a producer of primitive pathos and sugary sentimentality and a waste of good orchestras.

I think that if the writers feel they are writing honest stuff, presented as well as they can present it, this is enough. If its good enough to become popular, the right type of readers will find it.