How aboutFinding the right words seems like a tightrope walk to me. Statements, that are understandable and convey all the necessary information at the same time - hm...
"What it does:
[wall of text]
What it does not:
- gathering private data and sending them to corporations
- updating itself without permission
- locking you inside an own storefront, a certain desktop environment, operating system, proprietary data storage, online activations, etc...
- bricking itself after softwaremodding
- preventing you from exchanging the battery