Zircon is still under development with recent RFC's extending the memory synchronization and attribution model for processes.
There was also more extension added to one of the key disk formats in March which has an eye to more flexible long term evolution and adaptation to particular device form factors.
The publicly available evidence does nothing to support your claims, entirely the opposite.
I used to work on Fuchsia, I have not for many years now and have no idea what their current roadmap looks like, but I do know where to actually look up what's been done recently, which is all public and you could do as well.
Anyway I have no idea if this has any fuchsia code in it.