The amount of internet drama a smartwatch that stopped being produced ten years ago generates even to this day is truly incredible. Nothing that's happening here is so important as to make enemies, and the fact that Core Devices even wants to use the open source app store and is willing to pay for it should have been an immediate "Yes, that's incredible, lets make it work" from Rebble. So what if they get bought by Fitbit or go closed source? Rebble will just be back to where they were before. That's the beauty of open source; it doesn't need them, it just needs people who are interested in the project.