If your car has a backside and another vehicle rear ended you -
everything ok. Just a lot of hassles fixing the rear damage.
In hatchback, no backside means other vehicles occupants splatter
their brains and blood on your rear windscreen, so must have wiper
so you can see clearly to report to police the licence number of
vehicle that damaged you.
That is why hatchbacks have wipers.
If you drive expensive vehicles without wipers, why you worry about
an accident?
Throw enough money at a problem and the problem goes away
......
