Does the extension reward me by selling my data? (No!)

No! The AirTime system rewards your time and attention, it does not record or sell your private data.
Time and your attention is a finite resource. The AirTime monetization system replaces ads and instead rewards users based on their time spent on web pages. It is not based on any form of data collection.

For publishers, ads insert contradictory design elements to websites that drive potential customers away from their product or service.,AirTime enables you to monetize your visitors undivided attention.