Android is fundamentally FOSS, but in reality Google has an additional proprietary layer over the top (that unfortunately is growing)
HarmonyOS is fundamentally proprietary, but a few components are GPL licence so they’ve done the bare minimum in making that open to satisfy the law. And even those parts are being stripped out over time.
They don’t even do that.
Android is fundamentally FOSS, but in reality Google has an additional proprietary layer over the top (that unfortunately is growing)
HarmonyOS is fundamentally proprietary, but a few components are GPL licence so they’ve done the bare minimum in making that open to satisfy the law. And even those parts are being stripped out over time.