Let's say you're building a product like Slack where you have to balance company vs. individual account deletion rights. For instance, if I join an open Slack s

Let's say you're building a product like Slack where you have to balance company vs. individual account deletion rights. For instance, if I join an open Slack such as Kubernetes developers vs. a company slack as an employee vs. a company slack as a guest - I believe Slack doesn't differentiate and requires the company to manage data deletion requests. How are they able to do this?