Last year same poll was made and this were the results:
Yes 53%
No 47%
Today BTC is at 10.700$ and BCH at 1400$ (yes , I put it so people in the future reading this will say: "WTF 1 BCH just 1400$ !!!")
Now vryatle someone admits whether he has bitcoins or not. Because bitcoins are very expensive and many are scared of scammers. Therefore, they save themselves and their means.
I don't think so, not everyone use the same PC to log in this forum and store bitcoins and a lot of people have hardware wallets.