You have a good point about bitcoin forgetting the fact that bitcoin is a currency, and has always been a currency. But this part is not true. Historically whenever the stats come out (like the amount of money or number of transactions that payment processors have handled annually or per month) they always point to the opposite meaning whenever price is rising fast and big there are a lot more people who are spending bitcoin.
For example more people spent bitcoin during 2017 than they did in 2018.