Well if addresses are the basis of growing then i think we are in the wrong path because a single person can have dozens or hundred if not thousands of wallet , some are just for single use(in which will surely show flow of funds) while others uses for multiple occasions.
I believe that we need to understand that the adoption will come when people are starts creating a wallet to use permanently and if that is the chart saying then maybe I will buy the idea of we are now in mass adoption.
but if not then lets look for another option on how to check who are adopting and how large they are now.