Is it dead? I know the fare rules originally said 6/15, but, e.g., the first itinerary in my OP I see for $746.80 on aa.com at the moment.
Or over July 4 weekend, I see (Jul 3) LGA-DFW-SCL-PMC, (Jul5) PMC-SCL-DFW-AUS-JFK for $792 (~5.5cpm) or $822 for full EQPs (~5.75cpp). $897 for a same day turn and full EQPs.