Get over Pocket. There's no closed source code included. The open source code that integrates with Pocket is never executed due to lazy loading if you don't specifically use Pocket. No money changed hands. It was implemented because users had been asking for the functionality for years and Mozilla determined that it made more sense to partner with the best in breed provider of the service rather than reinvent the service and support it on an ongoing basis themselves. You can right-click and remove it if you don't want it.
Money changing hands would have been better. That would've been a valid reason.
>> "best in breed provider of the service"
Or providers could have just created extensions. Now that Mozilla picked a winner competition suffers.
1. https://hackademix.net/2009/05/04/dear-adblock-plus-and-nosc...