FOR DEVELOPERS OUT THERE ...
HarmonyOS is open-source, which means that other device-makers could theoretically use its operating system. Making it open-source could help the OS increase its scale and attract more developers to make apps for it. Having a large number of useful apps is important for any OS to be successful.
LOL! Whew! I know that will make me feel better. I'll run right out and buy a Huawei piece of hardware right now! I'm sure there won't be any hidden back doors anywhere!