In addition to what
@jordan roadkill
already said, the SNKRS app will also give you an option to keep "searching" for availability and will checkout for you once it finds the stock. Similar to a bot...
I agree, there is no reason anyone should fail on Oreo IV with the SNKRS app. It's a good thing for now until it's available on a wider scale. After that, it's only a matter time before the sneaker programmers compromise it like everything else Nike has done (i.e. TLO, #RSVP, captcha, countdown timer, early links, etc).