So much has been said and written about this topic, that it is almost fruitless to comment. All you need do is google the topic and you will find countless analyses of the benefits of one or another approach, or of each approach. But beware, the writer’s subjective preference will often show, once you do this. For example, Kate Forsyth is probably on the side of plotting, as is James Patterson. And the genre chosen by the author to write in, will determine to a great extent, which approach s/he chooses. Fantasy writers and detective story writers will likely employ plotting as the favoured approach. However, not always. Kate Atkinson writes detective stories, but she is also great with character. She seems to bridge the gap between the two categories in a seamless way.
Kate Grenville and many other writers, especially female writers, prefer writing in segments based on vivid characterisation and “zingy” writing. An example of this style of writing is Tirra Lirra By The River by Jessica Anderson (1916-2010). See my post on this blog about this book at:
I think that I belong to this latter group more than to the other group. However, I also think that one must adhere to each approach at different times of the writing process.
A balanced summary of the issue by Sulari Gentill can be found at: http://southerlyjournal.com.au/2015/01/29/discovery-through-story-3/
and by The Magic Violinist on “The Write Practice” at: https://thewritepractice.com/plotters-pantsers/
It almost, but not quite, boils down to “female” versus “male” perspectives. This is not as sexist as it sounds, if taken in the Jungian sense of “eros” versus “ego” and “anima” versus “anima”. That is, we are all made up of two aspects, and we’d be advised to take into account both of these aspects when creating stories.
If you neglect the Apollonian side relating to “the rational, ordered, and self-disciplined aspects of human nature”, you will fall short of the desired end goal. And if you get caught up totally in the “Dionysiac lust and chaos, you might also fail to reach potential. See Wikipedia on this dichotomy of “the struggle between cold Apollonian categorization and Dionysiac lust and chaos”.
It is best, if at all possible, to remain with one foot in both camps, as does British author Kate Atkinson.
That is because both approaches can collaborate, like partners in a successful “marriage of equality” (in its broadest sense), in producing a brilliant work of art.