This is an extremely bad sign because:

-It shows a lack of self-awareness and misunderstanding of their emotions.  Even though they say this, a large number of people panic sell whenever the price goes down. 

-It ignores the fact that BTC has multiplied in value many times before and cannot continue doing so exponentially forever.  A person who buys in at $190,000 would not be able to say "I'll sell when the price reaches tens of millions" (unless the dollar experiences hyperinflation) because that amount of money does not exist.

-It ignores the possibility of it being used as a currency.  Most of the respondents (in this poll's case over 90%) were not even interested in using it as a currency, and they still consider the prospect of selling it for fiat currency when they want to actually spend them.