I've been using Apple Maps routinely for navigation in the UK for at least a year now, and I have to agree, it's quite amazing these days to the point where I prefer it to driving with Google Maps
I did have some trouble with it while driving in Norway, but even Google Maps had issues there where it couldn't recognize which road I'm on, and the ferries were a bit confusing
This happens with both though. I've had Google try to send me the wrong way down a one-way street, as well as take me round the houses because it thought a two-way street was one-way. We'd need some kind of large study to say which was worse in that respect.
I did have some trouble with it while driving in Norway, but even Google Maps had issues there where it couldn't recognize which road I'm on, and the ferries were a bit confusing