Mozilla didn't want to fund further development, most of the team ended up at Coqui.ai
Seems more likely that Mozilla would have shut down both projects, but NVIDIA funding saved the more important one.
EDIT: Nvm, there seems to be a new project called Sayboard that does everything on your phone:
https://github.com/ElishaAz/Sayboard
(though switching from Swiftkey is a bit annoying)