Yeah, it's really finicky. It does seem like a relic from an earlier era of computing.
Unintuitive is fine for me, as long as I can learn how to use it. But my biggest complaint is that it'll almost never start navigating without problems. You have to begin navigation by pressing a button on your phone, because you can't store routes in the GPS unit.
You press "Go," nothing happens, or it crashes, you restart the app, restart the GPS, switch airplane mode on and off, and repeat one or two or three dozen times. Then, right before you descend into a rage blackout, the route will mysteriously transfer over to the GPS. Usually.
This happens nearly every ride.
The firmware updates do seem to have solved other problems. It used to crash if my route looped back along the same road, for example, and that hasn't happened in a while. And the battery life really is terrific. But no, I wouldn't recommend it.