Vboy - good find. It seems that the data is only collected from stores using shopify.
As the CFO said in the comsecc interview last week - A lot of clients have large, bespoke technology stacks. I imagine all the big players and any legitimate e-commerce business using afterpay falls under this umbrella and therefore do not use shopify. The big boys bring the customer base - they make the dial move so that data isn't so valuable to me.