I am afraid it does not matter any more, at least not for practical software freedom. Most Android devices these days have bootloaders that cannot be unlocked, preventing device owners from installing custom kernel images onto their devices. And even if you have a phone where that isn't true, Google's SafetyNet will prevent you from using many crucial applications, like your bank's Android app, on that handset. It's…
These new policies allow more "cross pollination" between mainline linux and the fork used by android. Waydroid running smoothly on an unmodified kernel is a result of this.
Waydroid is important "for practical software freedom" because it allows pinephone and librem-5 to run android apps.