Good points, yes. But.
You could've also lost, don't forget that. Because if you order an iPad you will not lose it. You cannot gamble it. You order and you receive.
If you would've ordered cash - well - then you would've to work HARD to get 2 ipads.
And I think that one click and it is done, is way +EV (even though you lose 10,20% or I don't know how much, money) than sign up with certain link, deposit 50 bucks, and 5x rollover!
Or maybe it is just really easy for everybody to rollover couple of times. I know it that is not case in my example.
Not to even mention stress, ugh.