It’s a minor point and you posted that nearly 3 years ago. But in the meantime the Huawei fork happened and the government of Portugal now publishes its applications for Android, iOS and “Huawei devices - HarmonyOS App Gallery”.
So there is a chance to break the duopoly if there is enough traction and if it does not cost them too much effort. They won’t hire a team to port their app to Qt/Silica. But if SFOS can be a compilation target for their framework SDK, we can get native apps (which is the argument in the “Flutter” thread).