Since US regulations make it more difficult for citizens to participate in crypto investments the growth shows an underlying interest.
You're obviously not from the states, because it is still legal to invest in bitcoin and everything else except for ico's. The only regulatory pressure anyone is getting is facebook with libra. There are also some laws pertaining to exchanges which is why Binance doesn't provide service to all states, but it isn't a nationwide issue. So it's nowhere near as bad as you think.
people like OP tend to believe whatever lies they read online. it doesn't even have to be from a source like a news site, it may as well be a random comment on a forum. so he might as well be from US but fallen for the FUD.
as for these stats, if it were true then bitcoin price should have been a lot higher than this. a nearly 15% adoption in US alone means price of at least $500k for this limited supply currency! the only reason why it is still at this very low price levels is that the adoption is still around 1%.