It's not as potentially reactionary as the title makes it sound, its mostly about the company's rapidly changing strategy after the huawei ban. On the one hand, a third mobile ecosystem sounds cool. On the other though it's going to be largely proprietary as well. I hope it'll offer an ability to use apps without google dependency though if they are optimized for both platforms and beyond that it's going to be interesting to watch the platform grow and see how it can compete with google.
yeah "harmonyOS" is more of a platform than an actual operating system. There can be harmonyOS/android, harmonyOS/linux, HarmonyOS/"whatever their smartwatch and other smaller smart devices run on" and then there's the actual HarmonyOS which is super small and I guess will run in some really small devices like IoT.