You may theoretically find it advantageous to use such a system anyhow. To a first-order approximation, the danger a government poses to you is proportional to its proximity to you. (In the interests of fairness, I will point out, so are the benefits a government may offer to you. In this case it just happens to be the dangers we are discussing.) Using the stack of a government based many thousands of miles/kilometers away from you may solve a problem for you, if you judge they are much less likely to use it against you than your local government.
But China certainly won't put out an "open" anything.
As far as HarmonyOS i dont see many uptakes outside strict US free requirements as the other OEMs are lazy and also dont want to be locked into a competitor.
SailfishOS looks like its your time to faceplant once more , by not having a proper stratergy on monetizing on the many missteps from the current monopoly.I thonk at this point they need a leadership/biz stratergy overhaul - the tech is nice and polished, user demand is off the charts for an alternative . And they are just .. missing. Not even in th e conversation.
Where you been? They already had Huawei get kickbanned by Google and made their own OS (it's not more open): https://en.wikipedia.org/wiki/HarmonyOS
Not Google controlled for sure but also not open.
Maybe it's just my experience.
The US system is dying from lack of competition.
This is what lack of options does to a MF
Say it with me: “Living in a police state is bad no matter who’s running it”.