Fig does not "phone home" when you type!
When you install Fig, we download the most up-to-date completions specs using the Github release API. (You can see them in ~/.fig/autocomplete). We got rate limited this morning (thanks HN!), so some people downloaded Fig, but didn't have any completion specs available.
Don't worry: all of the completion happens locally on your machine. None of your keystrokes or raw text from your terminal leaves your device.