Google Nest Hub and Audio have gone suddenly dumb for many users (Updated: Fixed)
www.androidauthority.com
The Nest Hub and Audio are failing to answer basic questions like "Hey Google, what's the weather?" or "What time is it?" Other commands are hit-and-miss.

The Nest Hub and Audio are failing to answer basic questions like “Hey Google, what’s the weather?” or “What time is it?” Other commands are hit-and-miss.