Just download and host it yourself and no outage.

Idk if this covers your needs, but Home Assistant is non-cloud and supports voice commands. They're selling a voice hardware now (preview edition): https://www.home-assistant.io/voice-pe/ While I've used HA for years, I've never tried any of the voice command methods, so can't really comment on it. I had just recently came across their voice hardware and am probably going to give it a try.

And it mentioned nothing...

A family member with no inherent moral compass or empathy, whose eyes, ears, thoughts and agency belong to teams of trained profit-seekers in a different country. I disapprove of this humanization of software.

https://archive.is/oTR8Q

Meta? Isn't that owned by alleged pedophile Mark Zuckerberg? I heard he was a pedo on Facebook.

Not to mention TeleMessage violated the terms of the GPL. Signal is under gpl and I can't find TeleMessage's code anywhere. Edit: it appears it is online somewhere just not in a github repo or anything https://micahflee.com/heres-the-source-code-for-the-unofficial-signal-app-used-by-trump-officials/