“From 2019 to 2024, versions 1 to 4.3 (4.5 TV) of the operating system were built by integrating the Android Open Source Project (AOSP) with OpenHarmony, allowing it to support both HarmonyOS and Android apps. The current iteration of HarmonyOS became known as HarmonyOS NEXT (later it was renamed HarmonyOS 5 in launched of Pura X). HarmonyOS NEXT was announced on August 4, 2023, and officially launched on October 22, 2024. It also replaced the OpenHarmony multi-kernel system with its own HongMeng Kernel at its core and removed all Android code. Since version 5, HarmonyOS only supports apps in its native "App" format.
HarmonyOS 5.x+ both discards the common Unix-like Linux kernel and replaces the previous multiple-kernel, kernel agnostic system from OpenHarmony with its own bespoke HarmonyOS microkernel as a single framework.”
⇒ this shows it’s possible to create a new stack. It’s not Linux, though, and I think a large reason for this succeeding is that it started in the Chinese market after the US sanctioned Huawei.