What drives plastic pollution — behaviour or manufacturing?

1) What kind of claim is this?

This is a root-cause attribution claim.

2) What context is assumed or missing?

Production volumes and waste systems are not described.

3) What has to be true for this to work?

Disposal habits would need to drive most leakage into water.

4) When would this not hold?

The claim weakens if production scale largely determines waste flow.

5) What follows if we accept it?

Responsibility shifts toward individuals and norms.