-snip-
Yeah, if you read in to it, it states that percentage of active users on various services is increasing on average (35% in 2016 up to 38% in 2018), but in quantitative terms the increase in active users is far less than than the increase in total users. They are therefore drawing the conclusion that many new users are passive - i.e. make one or two purchases and just hold, as opposed to actively trading or spending crypto.
I do like their data regarding energy consumption of mining - in short, crypto mining uses less energy than previously thought, and of the energy it does use, more of it is renewable than previously thought. The worst offenders for CO
2 release are China, who draw almost all of their energy (not just mining related) from fossil fuels.