>>14468444correct me if I'm wrong but people have been getting the game at an increased rate over a week
if 100 people have the game that would -statisticially- make it around 1 in 81 chance of getting a shiny if every person is battling a wild pokemon at the same time
there's been around 10 shinys found and no person has had two
and then you take into acount the fact that horde battles raise the chance even more