From what I understand, the line does nothing. It still all depends i how fast you get the shoe into your cart. If you add it quick enough, then you have little to zero wait time, but if you don't add it quick enough, you most likely miss it like you normally would.
It doesn't sound like this eliminates anything except the "Due to a high volume of orders processing" message. It just makes me uncomfortable with that now because it usually takes me two or three times for me to get that message to finally get it into my cart. I hope Nike gets rid of this quick