I do not know is OP think on total market cap or only
BTC MC, which is both as 1Referee say meaningless, it is just big numbers and we see that total market cap is always depends on
BTC price - when king is in red all market is in red. One day there will be trillions of $ in this market, I absolutely do not doubt it, but after every price spike there is correction. So to see statistic saying we have 20 trillion $ market cap will take long time....
What do you mean by "7 to 11 crypto users"?
Maybe he think that 7-11% people in world use crypto these days, but that number is much lower. In some researches estimates says it is about 0.5-1% of world population involved in cryptocurrency. In any case there is lot of space for progress, imagine only 5 % of world population start to buy/use crypto.