I think whichever privacy centric voice assistant will come to market first will build an unstoppable first mover advantage. There are so many people just waiting for an alternative to the Googles/Amazons of the world.
I've been interested for a long time in an AI assistant but bringing one of big tech's spying devices into my home has always been a total non starter. So for me personally, Snips is an extremely promising project. The team is very responsive in their Telegram as well (https://t.me/snipsair).
Snips looks like a promising prospect!