Boson sampling is a computation that is not doable on classical machines but quite doable on quantum photonic machines.
The precise generated pattern at the end of the board will take impossibly long to compute/simulate on classical machines.
However, just being a computation that is not doable by classical machines does not seem too rare or special... Classical computers cannot fully simulate the brain of a six-year-old for even a microsecond either.
So are there any practical uses for being able to perform boson sampling, other than doing a computation that classical machines cannot do?