That’s not how electron apps works. When you load a website with your web browser you get served the front and execute it. When you have an electron app, the front is in the source code of the app, and you decide when to update it so you don’t get served unexpected compromised updates. As for the paid service : They don’t sell your data and don’t show you ads so they need money, it’s that simple.
I’m wondering since they mention “it’s not a Linux distro” if they will expand these tools to other kernels like RedoxOS ?