For me, it allows both rider and pillion headsets to hear everything and then displays the route guidance on the tft screen along with calls and music so I don’t have another device in my field of vision. Just the tft screen on the bike, very much the same as your car display.
Saving GPS mount, phone mount and having to worry about interfering with multiple devices whilst riding, this module simplifies all this in my opinion.
Appreciate that there will be many different views on this but am happy I have it on my bike