TBH I could understand that instruction if I'm still parked on a road and just setting off and the thing doesn't quite know which direction I'm facing (yes, this is a software shortcoming, it could just save the direction from before parking, but I digress)... on the other hand, in many cases I wouldn't be able or allowed to turn around straight across the road anyway. Oh well...
also: most of the time I do actually know which direction I'm going and where west-ishhhhhh would be, but I still consider it a dumb or entirely needless direction/info (e.g. turn right onto X heading west - just leave the west-part out entirely?).
also also: I'm not affected anyway, because first things first, I always turn all navigation prompts off / silent. Even with the tomtom character voices, I wouldn't want my satnav talking at me.