So it's a kind of electron apps, packaged for Arm Mac only? Hate to be that guy but that's the least cross platform thing I could imagine. I mean Windows Forms apps and VB6 apps are more cross platform than that (at least supporting one OS but a couple of architectures).

Well, it's not like VB6, which never had compatibility on any other OS. They are starting out and they are confortable with that small scope, which I think is good for projects like this. They have Windows and Linux suport on their roadmap.