While we offer people the ability to do machine translations, there's absolutely no reliance on them. We actively advise against using machine translations when onboarding new users

It's a good point about the "every language" part. That's really the goal of the project - we've been adding about 20 languages a month since we started, and don't plan to stop until we support every language. However we're not there yet, give us a few more months to live up to that ;)

We have some ideas for languages that don't have widely available TTS, but we're not ready to share anything quite yet.