Originally Posted by
FluxTZ
There's also a note their Mileage plan will continue as a miles-based system as opposed to points-based.
I think you might be misreading the article:
Sprague also announced Thursday that Alaska Airlines will not transition from a miles-based rewards program to a points-based alternative, in which points are awarded based on the cost of plane tickets rather than the distance of the trip.
Emphasis mine.
Looks like there was a typo in the original article. AS will stick with mileage earning (for now!).