The CLI is a critical part of the developer experience. Often, it's the first interface for developers to interact with your product. However, with Open Source products, it's difficult to know if and how end-users are using your product. Even though telemetry data might be very interesting for the product team, it's important to respect the end-user's privacy; we need to ensure that no sensitive data is collected.
Only collect data on how end-users use the CLI to interact with your product, and stay inside those boundaries.