That lasted about 6 hours before I figured out how to switch back to Assistant.
1. For years "Navigate Home" has done exactly what you'd expect, then one morning it decides traveling to Home Depot is the only possible interpretation.
2. A bog-standard timed alarm goes off, and half the time "Silence Alarm" leads to it insisting that there are no alarms going off right now.
What stings is that these aren't issues with ambiguous grammar or unusual phrasings, these are extremely predictable commands for features I would expect in the minimum viable product.
You can be using CarPlay to navigate at that moment to a destination, and because of the way my fiancee has Siri set up, if she says "Get me directions to the nearest Starbucks", Siri will say, "I'm sorry, I don't know where you are."