One has to keep in mind situations like this, and say that of other frequent fliers, namely Dorian who pointed out that there's no reason to fly AC > 100,000 miles, that these are fringe scenarios.
Very few people pay $60K on fares within N. America and miss SE. (one would guess). AC has to design a FF model that would change the majority of people's behavior in order to increase profit. Scenarios like this are simply ones that AC hasn't accounted for because it rarely happens.