One look at this survey and the most important thing it's telling us is that older means less interested in bitcoin. Young people are less brainwashed by years of living without basic freedoms and with stupid bankers telling them they need a credit and that money is safest in a bank.
I wouldn't expect more from 70 year old people who associate a bank with a big steel vault filled with bags of money.
If I was also 60 or 70 year old, I'm sure my reaction to bitcoin would be also be the same. Many of the old people I know still stick to the things that they are used to even though that there are already technologies that exist to make things better for them. They are very stubborn if you force them to use it like using applications on smartphones. But the most significant thing is that we got most of millennials in favor of bitcoin.