I have hope for Zircon/Fuchsia, because I'm sure the goal, at some point, is "everything supported by AOSP and all Chromebook hardware" which I hope would be enough to bootstrap the positive feedback loop of people contributing drivers…
The BSDs are nowhere near Linux when it comes to driver support. Particularly when it comes to mobile devices like what fuschia is targeting, I don't even know if you can run a BSD with what exists currently.