within their margin of error, which is probably within 1-3 percent error
when the result is 2% having a margin of error that is 1% means 50% error, and 3% means the poll was all wrong!

But I don't know why people find this so weird, Bitcoin is a massiely volatile, and risky alternative investment which is not something which most people want to invest in. Most people don't have the will power to see their investment account lose 50 percent -- or more value in one day -- they want traditional investments which have went up for centuries.
bitcoin has never lost 50% or more in one day and the drops never came out of nowhere. they always come after a big rise has happened. for example when bitcoin was at the bottom a couple of years ago at $220 we never saw a drop. we saw some panic push-down which didn't even last more than 1 hour which doesn't count as a drop. the drops came after the rises for example bitcoin went from $1000 to $20000 then it had the big drop over 6 months.
I am just nitpicking about the math though. but I agree with what you said. it is the volatility that makes some people not-want to invest in bitcoin and also the unregulated situation of bitcoin market and also all the FUD.