Update:
I'm at 68% right now.
The rewards I get at this point are few hundred Satoshis. sometimes even lower. as low as 37 Satoshis! haha
Maybe they will pay someone the minimum threshold eventually, but it would take a very looooooong time to reach it.
They will milk the players/users for as long as they can. It may take months or years to reach the threshold and it you might
never reach it after all. even if you have thousands of gems.
I'm almost certain that no one got paid yet. It's almost impossible. or perhaps it is.
Exactly what I have been thinking from day one.
As you reach a higher percentage, the points you keep receiving keep lowering in away that by the time one reaches above 80%, it will look virtually impossible to reach the withdrawal limit and with this people will give up before reaching there.
So basically it's will be time wasted on the player's side and maybe ad views gained from their side.