I imagine they're playing it super safe as this is all new and untested, way I see it, the more options to fiat the better, even if there is a wait.
When other exchanges see usecrpytos getting business from paypal, they will also adopt it, and perhaps speed up the process as a carrot to use them instead, give it time, Rux, give it time. (no pun intended, hehe)

Btw, thanks for the info, let us know if the payment is recieved ok, finally