The peanuts stocks are still around in places. Had a couple OAK-LA area flights last week, and had peanuts on an ONT-OAK leg. Also saw a passenger carrying a handful of Southwest packet of peanut bags around the OAK airport, and accidentally dropped an open one - it looked like there were 20+ peanuts that came out of that tiny bag!
(fwiw, I did a count on a second pretzel bag and found 14. Potentially a lot of variance, though a small sample size)
It ain't 8/1 yet!
I bet that is some lawyer imposed date and not reflective of actual peanut stock on hand. Bet they end up on eBay by some enterprising WN or airport employee after fished from the dumpster.
And that was what I concluded from our peanut counting exercise circa 2011 IIRC, weight or number, huge variances!