I have spent considerable time cleaning up my Gmail and Google docs because I am getting the big red warning about storage. I've used their data management tools and various interfaces. It is clear they don't want me to clean up my date -- just upgrade. They make it real hard, and every turn -- you should just upgrade.
@kin had the same experience, I resisted two years until I had to give up and pay. It's absolutely frustrating
@kin no idea why would anyone do that 😉