mags
an interesting point
So 'necessary' has numerous meanings.
And any notion of whether something is 'necessary' or not is inevitably subjective and personal
so the real answer to this question 'is this necessary?' is that the people who made it (Director, writer, producer, cast whoever)
decided that, for them, it was.
and if most, or all other people disagree with them that will impact on how widely viewed their work is
and that is how it must inevitably be for any art
as soon as someone looks at something created by someone else and asks 'but is that bit necessary?' we should not be surprised if the answer is;
'Yes. That's why i put it there!'
Or we should recognise that really have missed the point of the whole thing