That bonus allowed Chase to see the proportion of engaged Freedom cardholders who use Apple Pay, Google Pay, Samsung Pay, Chase Pay. This offer allows them to judge the extent to which they can move cardholders from the competitive tools to their own. This data might be useful when trying to increase acceptance of their system.
I thought one other quarter this year only had Chase Pay. One would think they'd have gotten a lot of info from that run.
Anyway, there's always gift cards from Best Buy I suppose.