Your computer asks "Hey is ____ SSID available?" and pineapple says "Yep! That's me!" Now your computer connects to the pineapple.
Well if you set the "Pineapple detected" SSID in your computer as the top priority, you'll connect to that when the pineapple is around. You're just putting in a dummy network on your computer to warn you that you've just joined the network f*&%ville, and you're not the mayor.
So anyone running a pineapple should alter the code not to respond to any SSID client probe containing the string "pineapple" and just wait for the next probe, and latch on to that as that will result in the MITM'ing of a high-value target.
