Why not use the symfony CsvEncoder?

Problem/Motivation

I was looking at a CSV export for views and was wondering why it wasn't possible with core out of the box. It seems the version of symfony/serializer we ship with already has CsvEncoder.

With a bit of digging, it seems all I needed to get this working was an entry in services.yml:

  serializer.encoder.csv:
    class: Symfony\Component\Serializer\Encoder\CsvEncoder
    tags:
      - { name: encoder, priority: 21, format: 'csv' }

Is there a reason not to use symfony/serializer in this module? Is there also a reason we don't simply add this in core too?

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes